Some standard content:
ICS13.100
Record number: 1131-—1998
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY 6307-1997
The drilling safety provisions in the beach-shallow water
Issued on 1997-12-31
China National Petroleum Corporation
Implemented on 1998-07-01
SY 63071997
This standard is formulated to strengthen the safety management of shallow-water drilling, stop violations, eliminate potential accidents, and make shallow-water drilling move towards a standardized track.
This standard is the minimum safety requirement that should be followed in shallow-water oil and gas drilling. This standard mainly includes the basic conditions of shallow-water drilling, general safety management regulations, safety systems and materials, fire and explosion prevention, well control and electricity safety, drilling equipment safety, drilling operation safety and accident management. This standard does not include the design, construction and equipment of shallow-water drilling facilities. This standard was proposed and coordinated by the Petroleum Industry Safety Professional Standardization Technical Committee. The drafting units of this standard are: Shengli Petroleum Administration Offshore Drilling Company, Shengli Petroleum Administration Offshore Safety Technical Supervision Department. The main drafters of this standard are Zhao Xijiang, Lu Shihong, Shi Yongxian1 Model map
Petroleum and Natural Gas Industry Standard of the People's Republic of China Shallow Water Drilling Safety Provisions
The drilling safety provisions in the beach-shallow waterSY 6307-1997
This standard specifies the basic conditions, safety systems and materials, fire prevention and explosion prevention, well control, safe use of electricity and other basic safety requirements for oil and gas drilling in shallow water areas. This standard applies to oil and gas drilling in shallow water areas. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest versions of the following standards: GB3836.1-1983 General requirements for explosion-proof electrical equipment for explosive atmospheres GB5306-1985 Management rules for safety and technical assessment of special operations personnel SY5225-1994 Regulations on fire and explosion safety management for oil and gas drilling, development, storage and transportation SY5690-95 Regulations on the management and allocation of personal labor protection products for employees of oil enterprises SY5742-1995 Well control of oil and gas drilling Safety and technical assessment management rules SY5747-1995 Safety rules for offshore oil construction projects Safety management rules for offshore oil operation guard ships Issued by the Office of Offshore Oil Operation Safety of the Ministry of Energy of the People's Republic of China on September 18, 1990
Requirements for reporting and statistics of offshore oil operation accidents Issued by the Office of Offshore Oil Operation Safety of the Ministry of Energy of the People's Republic of China on November 30, 1992
3 Basic conditions for shallow-water drilling
3.1 Basic conditions for shallow-water drilling personnel
3.1.1 Aged 18 or above, in good health and with a certificate issued by a county-level (including county-level) or above hospital: no diseases, physical defects or infectious diseases that hinder the performance of this position. 3.1.2 Have the education level required for drilling and operation, and have received safety and professional technical training. 3.2 Certification requirements for drilling personnel
3.2.1 All operators going out to sea should hold four safety training certificates: "Survival at Sea", "First Aid at Sea", "Platform Fire Fighting" and "Lifeboat Operation"; all personnel taking helicopters should hold a "Helicopter Distress Underwater Escape" safety training certificate. 3.2.2 Platform managers, drilling supervisors, safety supervisors, drilling team leaders, drillers, assistant drillers, and derrick workers should hold "Well Control" and "Hydrogen Protection Technology" training certificates.
3.2.3 Mud engineers and mud workers should hold "Hydrogen Protection Technology" training certificates. 3.2.4 Platform managers, drilling supervisors, safety supervisors, drilling team leaders, and mud engineers shall participate in annual safety training for shallow-water oil operations and obtain qualification certificates.
3.2.5 Platform managers, safety supervisors, and mud engineers shall participate in annual environmental protection training for shallow-water oil operations and obtain qualification certificates. 3.2.6 The certification requirements for special operations personnel shall comply with the provisions of GB5306. Approved by China National Petroleum Corporation on December 31, 1997 and implemented on July 1, 1998
3.3 Certification requirements for drilling and embankment facilities
SY 6307-1997
3.3.1 Fixed facilities used for oil and gas drilling in shallow waters shall at least have the following certificates: a) Business license of the contractor;
b) Safety certificate;
c) Cargo equipment certificate;
d) Radiotelegraph, telephone certificate and radio station license;
e) International Oil Pollution Prevention Certificate;
f) Insurance policy;
9) Fixed drilling and facility operation permit. 3.3.2 Mobile facilities used for oil and gas drilling in shallow waters shall at least have the following certificates: a) Business license of the contractor;
b) Personnel certificate:
c) International tonnage certificate;
d) International load line certificate:
e) Safety certificate;
f) Cargo equipment certificate;
g) Radiotelegraph, telephone certificate and radio station license: h) International Oil Pollution Prevention Certificate:
i) Nationality certificate:
Insurance policy;
k) Mobile drilling platform (ship) operating license 3.4 Marine environmental conditions
3.4.1 Shallow water drilling facilities should operate within the limits of marine environmental conditions permitted by the certificate issued by the issuing inspection agency.
3.4.2 Before drilling with a mobile drilling platform, professional personnel should conduct marine engineering geological surveys to find out the hydrological and geological conditions in the operating area and issue a survey report; operations can only be carried out when the platform's own safety and operating safety conditions are met. 3.5 Labor protection articles
In addition to the labor protection articles provided in accordance with SY5690, each shallow-water drilling facility shall be equipped with at least the following labor protection articles: a) 6 sets of hydrogen sulfide gas masks;
b) 2 sets of portable oxygen respirators;
c) 2 sets of light diving suits;
d) 10 sets of waterproof and electric;
e) 2 sets of fireproof clothing.
4 General safety management
4.1 Safety organization
4.1.1 Each shallow-water drilling facility shall establish a safety production leadership group to arrange and supervise the safety work on the facility.
4.1.2 Each shallow-water drilling facility shall establish a safety emergency command group to fully implement the safety emergency procedures of the facility. 4.1.3 Each shallow-water drilling facility shall be equipped with two full-time safety supervisors, and always maintain a safety supervisor on the drilling and facilities: supervise the implementation of various safety systems of the drilling facilities
4.2 Safety warnings
Danger areas, noise areas and any other parts prone to danger on the drilling facilities shall be equipped with obvious safety signs and warnings2
4.3 Labor protection
SY 6307—1997
Labor protection equipment shall be worn for earthwork operations, safety belts shall be worn for high-altitude operations, life jackets and safety belts must be worn for outdoor operations, and corresponding labor protection equipment shall be worn for special construction. 4.4 Guard ship
During the drilling operation, there shall be a guard ship on duty that meets the requirements of the "Safety Management Rules for Guard Ships for Offshore Oil Operations" within 5Ⅱmile to guard the drilling facilities.
5 Safety systems and information
5.1 At least the following safety systems should be established for shallow-water drilling facilities: a) Safety inspection system;
b) Safety meeting system;
Safety education system;
d) Safety reporting system;
e) Safety emergency procedures and exercise system;
f) Accident management system.
5.2 The following safety information should be recorded or compiled and saved on shallow-water drilling facilities: a) Facility manager work log: b) Safety record book; c) Safety inspection and hidden danger rectification record: d) Radio and telephone logs e) Sea and weather records; 0 Safety manual: g) Operation manual; h) Other relevant safety information: fire and explosion prevention 6.1 Division of hazardous areas The division of hazardous areas shall be carried out in accordance with SY 5747. 6.2 Electric (gas) welding operations 6.2,1 Electric (gas) welding operations should strictly follow the relevant safety operating procedures. 6.2.2 Electric (gas) welding operations should ensure that the procedures for opening a fire are complete, technical measures, construction tools, and fire-fighting facilities are in place; the location of the opening fire is clear; flammable materials are completely eliminated, and there is no oil, gas or flammable materials in pipelines and containers; the welding bottom line is well grounded and supervised by personnel. 6.3 Fire and explosion prevention requirements
The fire extinguishing system configured for shallow-water drilling facilities should be inspected by the issuing inspection agency. 6.3.2
At least one set of explosion-proof tools should be equipped on the drilling facilities. The fire, flammable gas, and toxic gas detection and alarm devices equipped on the drilling facilities should be inspected and tested regularly. 6.3.3
Shoes or boots with iron soles or iron nails should not be worn on the drilling facilities. 6.3.5
Electrical equipment such as motors, lamp switches, etc. used in hazardous areas should comply with the explosion-proof level of such equipment in hazardous areas. 6.3.6
All lighting lamps on the facilities should not be made of paper, cloth or other flammable materials. 6.3.7
Oil should not accumulate in the working cabins, decks, drilling platforms, etc. 6.3.8 Gasoline and power equipment using gasoline as fuel should not be stored on drilling facilities. During shutdown and maintenance. It is strictly forbidden to use gasoline to clean equipment
SY63071997
6.3.9 When liquefied gas is stored on drilling facilities, the safety management regulations for the use of liquefied gas should be implemented: 6.3.10 Drilling personnel should conduct a fire drill during each shift on the facilities; during repairs, fire prevention measures should be determined according to the specific circumstances at the time.
6.3.11 During drilling operations, various safety and technical measures for drilling into high-pressure oil and gas layers should be implemented. 6.4 Emergency shutdown of main diesel engine sets
The main diesel engine sets on shallow-water drilling facilities should at least be equipped with the following shutdowns: a) Short-range shutdown;
b) Remote control shutdown
c) Fuel quick-closing valve shutdown.
7 Well control
7.1 General provisions
7.1.1 Before drilling operations, the approved drilling design should include a well control design: 7.1.2 For development wells, the depth and estimated content of the formation containing hydrogen sulfide gas and shallow gas should be specially indicated in the design, and special preventive measures should be proposed; for exploration wells, measures to prevent hydrogen sulfide gas and shallow gas should be proposed in the design. 7.2 Blowout preventer group
7.2.1 The blowout preventer group for shallow-water drilling includes annular blowout preventer, fully enclosed gate blowout preventer, semi-enclosed gate blowout preventer, four-way blowout preventer, diverter, etc.
7.2.2 In shallow-water drilling, at least one set of blowout preventer group consisting of an annular blowout preventer, a fully enclosed gate blowout preventer, a semi-enclosed gate blowout preventer and a four-way blowout preventer should be used: the gate closing size of the gate blowout preventer should be consistent with the size of the drill pipe used; the rated working pressure of the blowout preventer group should be greater than the predicted wellhead pressure of the drilling. 7.2.3 For oil and gas containing hydrogen sulfide gas, the blowout preventer group used should be sulfur-proof type 7.2.4 For oil and gas with shallow gas, a diverter should be installed. 7.3 Accumulator device
The accumulator liquid pressure should be maintained at 19.7MPa, and the accumulator liquid volume should be at least 1.5 times the liquid volume required to close all BOPs. The minimum pressure after the accumulator provides 1.5 times the required volume of liquid is 9.8MPa. The accumulator should have two sets of hydraulic power sources, one of which is an emergency power source. Both power sources can independently restore the hydraulic pressure of the accumulator to close all BOPs and have sufficient energy to maintain the closed state.
7.4 Control console
Each shallow-water oil drilling facility should be equipped with a driller's console and a remote console, and both consoles can independently close and open the BOP group. The remote control console should be installed in a safe area far away from the wellhead and easily accessible to personnel. 7.5 Pressure-and-pressure manifold and choke manifold
7.5.1 Each set of BOP group should be equipped with a pressure-and-pressure manifold and choke manifold with the same rated working pressure as the BOP group. 7.5.2 Two control valves should be installed on the pressure-and-pressure manifold and choke manifold respectively, of which the control valves close to the two sides of the BOP body should be in the normally open position, and the other valves should be hydraulically controlled valves. 7.5.3 The working pressure of various bypass valves, pipe fittings, and pressure pipelines on the well-killing manifold and choke manifold should be equal to the working pressure of the BOP group: and they should be fireproof.
7.5.4 It is advisable to install a set of automatic grouting equipment, and the grouting pipeline should be connected to the well gate. 7.6 Standing BOP materials bzxz.net
7.6.1 The drilling platform should be equipped with upper and lower cocks of square drill pipe, back pressure valve and blowout preventer in drill pipe. The mud pool should be equipped with a liquid level monitoring alarm. 7.6.2 Before the second drilling, the drilling equipment should at least reserve: a) 60m3 of weighted drilling fluid:
b) 30t of soil powder;
c) 40t of weighted materials
d) 5ot of oil well cement:
SY 6307-1997
e) For oil and gas wells containing hydrogen sulfide gas, hydrogen sulfide gas treatment materials should be available. 7.7 Blowout prevention measures
7.7.1 Comprehensive recording should be conducted for the construction of exploration wells. 7.7.2 The construction well should be equipped with a casing head, and its rated working pressure should be greater than the designed wellhead pressure. 7.7.3 Before drilling into the high-pressure oil and gas layer, special safety measures should be formulated, the responsibilities of each person should be clarified, safety emergency posts should be implemented, and blowout prevention drills should be conducted.
7.7.4 Before drilling each well and drilling high-pressure oil, gas and water layers, the wellhead device and high-pressure manifold should be tested for working pressure according to the design requirements: operations can only be carried out after confirmation of compliance. During the drilling operation, the well control system should be checked regularly to ensure its good performance, flexibility and reliability.
7.7.5 The blowout preventer should be fully inspected, maintained, rust-removed, painted and replaced with wearing parts every year. After completion, a pressure test should be carried out. After passing the test, it can continue to be used. 7.7.6 Before opening the oil and gas layer, a measured rod should be prepared and placed in a conspicuous position on the drilling platform so that the person can be quickly identified when closing and closing to avoid the blowout preventer from getting stuck on the drill seed joint. 7.7.7 After cementing each layer of casing, drill through the cement plug for 5 to 10 meters, and a formation fracture pressure test should be carried out as the basis for wellhead pressure control.
7.7.8 Blowout prevention measures on shallow-water oil drilling facilities shall comply with the requirements of 3.4 of SY5225--1994 7.8 Well control training
Well control training for shallow-water oil drilling personnel shall be carried out in accordance with SY5742. 8 Electricity safety
8.1 Electrical equipment
8.1.1 Explosion-proof electrical equipment installed in dangerous areas of shallow-water drilling facilities shall comply with the provisions of GB3836.1. 8.1.2 The housing of electrical equipment, oil and gas pipelines and storage tanks shall be well grounded. The electrical lines shall be equipped with necessary overload protection and leakage protection devices.
8.1.3 Each shallow-water drilling facility shall be equipped with an independent emergency power supply, which shall meet the power supply requirements for communication, signal, lighting and emergency status: the emergency power supply shall be away from the dangerous area and the main power supply, and shall automatically supply power within 45 seconds when an accident or failure occurs in the main power supply. 8.1.4 The installation of electric heating equipment shall not cause overheating hazards to decks, bulkheads or other surrounding items. Electric heating equipment in living areas should be turned off when people leave.
8.1.5 The insulation performance of cables should be tested regularly, and the mechanical protection and fastening of cables should be good. 8.1.6 Shallow sea drilling facilities should have effective lightning protection measures. 8.2 Electrical operation
8.2.1 Electrical workers should strictly follow the safety operation procedures and hold electrician operation certificates. 8.2.2 The insulation performance of electrical work tools should be good, and insulation hammers, testers and other electrical special tools and test instruments should be regularly inspected. 8.2.31
Non-electrical workers are not allowed to install and repair electrical equipment. 8.2.4 Do not drill holes or drive nails on the drying wall to prevent damage to the internal cables. 8.2.5 It is prohibited to use 220V lighting lamps instead of work lights. The voltage of portable lighting lamps should not exceed 42V. 8.2.6 The fuse of the power supply circuit should be selected according to the load and must not be replaced by non-fusible ones. 8.3 Electrical maintenance
8.3.1 During the inspection or construction of electrical equipment, the power supply should be turned off, and a qualified electric tester should be used to test the electricity: only after confirming that there is no electricity can the work be carried out.8.3.2 There should be a guardian for power outage maintenance, and a warning sign with the words "Someone is working: Do not close the switch" should be hung at the power-off point. It is strictly forbidden to close the switch to supply power, and the person who hangs the sign must take it.
SY 6307-1997
8.3.3 When live work is required, it must be approved by the facility supervisor. The electrical engineer should be on site and strictly follow the operating procedures.9 "Lifting and placing operations
9.1 Each shallow-water drilling facility should have at least 4 certified crane operators. 9,2 The crane should be in good condition, with complete safety accessories, and hold a valid certificate issued by the issuing inspection agency. 9.3 When using a safety cage to lift people for work, the number of people who are pushed and loaded is not allowed to exceed; when the wind force is greater than level 7, it is not allowed to use a safety cage to lift people on and off the platform.
9.4 The rigging used for lifting heavy objects should be carefully inspected. 9.5 The crane driver should do the following during the lifting operation: have someone to point out the fall: the weight of the hoisted object is clear; have good sight; the rope loop is firmly tied and no one is allowed to stand under the boom.
10 Safety of drilling equipment
10.1 Drilling equipment
10.1.1 Drilling equipment includes: overhead crane, traveling block, big hook, top drive device, faucet, turntable, winch, derrick, drilling pump, etc.
10.1.2 Drilling equipment should be inspected regularly and obtain a valid certificate of qualification. 10.2 Derrick
10.2.1 Derrick workers should check the fixing of the derrick anchor bolts, ladders, handrails, first-floor platform, second-floor platform and its finger beams every shift to ensure that they are firm and reliable.
10.2.2 Before casing lowering and after handling accidents, the derrick thigh and tie rod connection bolts should be checked once every well or every month. 10.2.3
The load of the additional facilities (such as pulleys) on the parallel frame thighs or flat tie bars shall not exceed the strength limit. 10.2.4
It is prohibited to weld accessories or cut holes on the parallel frame beams, thighs and main components. No unsecured objects and tools shall be placed on the first-level platform, second-level platform and overhead crane platform. 10.2.5
10,2.6 All lamps, pulleys, risers, etc. fixed on the derrick shall have safety ropes. 10.3 Winch
Each operating part of the winch shall be inspected and maintained by designated personnel, fixed positions and at regular intervals. 10.3.1
When changing shifts, the driller shall carefully inspect the brake system including brake pads, brake bands, brake hubs, brake handles and crankshafts. The remaining thickness of the brake bands after wear shall not be less than 18mm; the wear clearance of the brake hub shall not exceed 8mm. 10.3.3 Ensure that the clutch of the upper shackle cathead is accurate, the cathead pull rope or zipper should be intact, and the size specifications should meet the requirements. The shackle tension should not exceed the allowable load of the cathead and chain. 10.3.4 The operating handles and switches on the driller's operating table should be checked before operation, and the faults should be eliminated in time. 10.3.5 The display of each instrument on the driller's instrument panel should be sensitive and reliable, and the record should be accurate. The technicians should check it once every shift. The instrument professionals should calibrate the above instruments once every quarter or every well (no more than three months). It is indecent to continue the drilling industry if any instrument of the weight gauge, rotary torque gauge and pump pressure gauge fails.
10.3.6 The driller can choose the winch speed according to the nature of the operation, the load size of the drilling rig and the underground conditions, but its load cannot exceed the rated power of the winch. Pay special attention when handling accidents. 10.3.7 The eddy-magnetic brake, the anti-collision device for shutting down the vehicle, the dead rope end and the live rope end of the main rope shall be checked once every shift and kept reliable. 10.4 Suspension system
10.4.1 The replacement time of the winch wire rope shall be determined according to its work, wear or wire breakage during use. 10.4.2 For the first use of a new rope, it shall be cut once when the accumulated work reaches 20GJ: thereafter, it shall be cut every time the work reaches 16.5GJ, and the length of each cut shall be 25 to 30m. 10.4.3 The safe distance between the suspension system driven by the installation head and the overhead crane should be at least 5m10.5 Circulation system
SY63071997
10.5.1 The tightness of the cylinder cover, valve cover and connecting flange of the drilling pump should be checked every shift to ensure that there is no puncture or leakage. 10.5.2 After each layer of casing, adjust the safety valve of the pump according to the requirements of the pump pressure and conduct a pressure test: its pressure relief pipeline should be fixed and reliable. The displacement and pump pressure of the drilling pump shall not exceed the rated displacement and recording pressure of the cylinder sleeve used, nor shall it exceed the rated pressure of the commercial pressure manifold. 10.5.3 Before starting recording: check the closing and closing status of each valve to prevent the pump from being blocked. When the pump is turned on, near the high-pressure manifold: no one is allowed to stand in the direction of the safety valve discharge pipe, and no obstacles are allowed to be placed. 10.5.4 When the workers are changing shifts, they should carefully check the switch status of the riser gate and whether the connecting joints have punctures and leaks, and whether the water hose has mutual wear and peeling
10.5.5 Under normal circumstances, the water hose should be used for two years and a water pressure test should be carried out in accordance with regulations. 10.5.6
The welding part and the driving part of the high-pressure pipeline should be inspected and the wall thickness measured after two years of use. 10.5.7 The water hose should be tied with a safety rope (after the 12.7mm steel wire rope is wrapped around the water hose, one end is tied to the gooseneck of the riser). 10.5.8 The mud pool area should have good ventilation. 10.5.9 Drilling parameter probes installed in hazardous areas: Combustible gas probes and HS gas probes should be explosion-proof probes that meet the requirements of the hazardous area. The inspection and test of these probes should be carried out once every 6 months. 10.5.10 The gas separator used in the drilling process should be kept intact, and its exhaust pipeline should be connected along the derrick to 1.5-2m above the red signal light on the top of the crane
11 Shallow sea drilling operation safety
11.1 Drilling
11.1.1 During normal drilling or drilling tools, the operator of the brake handle is not allowed to leave the post, and at least leave his name to cooperate with the driller. 11.1.2 The operator of the brake handle should be the chief and assistant drillers and other personnel holding the "Driller Operation Certificate". The above personnel should provide on-site guidance when the intern operates the brake handle. In the deep well stage, at the beginning or end of drilling, and when complex situations occur underground, the intern is prohibited from operating the brake handle.
11.1.3 During drilling, the driller should pay close attention to abnormal conditions in the well, understand the performance of the drilling fluid and the increase or decrease of the drilling fluid volume, so as to take timely measures to prevent leakage or blowout.
11.2 Drilling and drilling
11.2.1 Before drilling and drilling, the driller is responsible for organizing a comprehensive inspection of the control system, rotation system, lifting system, cooling system and well tools to ensure their flexible, safe and reliable use. 11.2.2 During drilling and drilling, the driller should control the speed of drilling and drilling according to the drill tool combination, the formation and the performance of the drilling fluid: prevent obstruction and jamming, avoid pumping and blowout and leakage of the formation due to pressure excitement. 11.2.3 During drilling, when the driller rotates the direction of the hanging card on the turntable, the wellhead operator should leave the turntable. 11.2.4. The hand tools used for wellhead operation must be tied with tail ropes; the pins of the tongs and the tongs should be fixed with safety pins for effective fixation. 11.2.5 It is strictly forbidden to use the turntable buckle. Double tongs should be used to buckle when buckling. 11.2.6 The vortex magnetic brake should be turned on when drilling more than 500m. During drilling, it should be done without hitting the sky block and without stopping the turntable. 11.2.7 Safety slips should be used when drilling: when connecting the lifting short section, double tongs should be used to buckle. It is strictly forbidden to not buckle or only use chain tongs to buckle; for the first use of the lifting short section, double tongs should be used to buckle and weld. 11.2.8 The lifting force of the drilling back resistance should not exceed 10kN; the downward pressure when drilling resistance should not exceed 50kN. In any case, the lifting force of the pipe string shall not be greater than its allowable tensile load or the safety load of the big hook; the torque limit value shall not be exceeded when rotating. 11.2.9 After drilling, the wellhead should be covered tightly to prevent objects from falling into the well. 11.2.10 When dealing with underground accidents or complex situations, the lifting ring and the valve of the lifting card of the big hook should be tied with a wire rope. 11.2.11 When the average wind speed reaches more than level 7 and the visibility is less than level 2, the drilling operation should be stopped. 11.3 Cathead operation
11.3.1 When pulling the cathead, you must dress neatly, fasten all buttons such as collar buttons and cuffs; wear gloves, and do not step on debris. 11.3.2 The cathead should be smooth and without grooves, and must be polished after welding, and the rope stopper should be installed. 7
SY 6307-1997
11.3.3 Brown rope with knots, broken strands and many burrs should not be used as cathead rope. 11.3.4 It is generally not allowed to pull the cathead with a wire rope: When pulling the cathead with a wire rope under special circumstances: Be sure to remove the main clutch first, and have someone to supervise.
11.3.5 When pulling the cathead, the operator should stand about 0.6m in front of the cathead, at a 45° angle to the winch of the drilling rig. When winding the rope, tighten it one by one. The cathead rope must not be tangled. When tightening, observe the wellhead, apply force from small to large, and do not pull or jerk violently. 11.3.6 When the thread of the drill tool is very tight, first tighten the inner and outer pliers, and after the operator stands in a safe position, remove the main clutch: then pull the cathead to unfasten the buckle.
11.3.7 The operator should not pull the cathead in the following situations: when the traveling block is swinging; when the rope is well wound; when there is a threat to the safety of the wellhead personnel; when the pliers are not tightened; when the indigo rope device is not installed; when the buckle is not aligned. 11.4 Cementing
11.4,1 The construction should be carried out strictly according to the cementing design. 11.4.2 The operation, inspection, maintenance of cementing equipment and the inspection and testing of the ash discharge system should be completed by professional operators. 11.5 Wellhead treatment
11.5.1 After the parallel port is installed, it should be pressure tested to check whether it meets the requirements of the parallel pressure level. 11.5.2 If the parallel port is to be retained after exploration, the auxiliary signs should be set according to the relevant specifications and standards, and the wellhead protection should be done well. 11.5.3 Abandoned wells: At least 4m below the mud line should be cleared. Before clearing, two cement plugs should be set in the well to seal the wellbore. 12 Shallow sea oil operation accident management
12.1. After an accident occurs in shallow-water oil operations, all necessary measures should be taken to protect the accident site and control the escalation of the situation. 12.2. After an accident occurs, it should be reported immediately to the superior competent department and the national offshore oil operations competent department. 12.3. The classification and grading, reporting and statistical requirements of shallow-water rock-rushing operations accidents should comply with the provisions of the "Reporting and Statistical Requirements for Offshore Oil Operation Accidents".
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.