Some standard content:
ICS 73.020
Registration number: 10430-2002
Petroleum and natural gas industry standard of the People's Republic of ChinaSY/T 5326-2002
Replaces SY/T5326-93,SY/T 5605-93Technical procedure for sidcwall coring of impact2002-05-28 Issued
National Economic and Trade Commission
2002-08-01Implementation
Normative reference documents
3 Quality requirements
Indoor preparation of the coring tool
Preparation before construction
6 On-site construction
Core acceptance
8 Safety requirements
Calculation of relevant parameters
Appendix A (Normative Appendix)
SY/T 5326—2002
SY/T 5326—2002bZxz.net
This standard is a revision of SY/T5326--93 "Technical regulations for coring in wellbore", and incorporates the contents of SY/T5G05-93 "Quality requirements and acceptance of coring in wellbore wall" into this standard. Compared with SY/T5326-93, the main changes are as follows: 1) The diameter and length of qualified cores are modified (3.4 of SY/T5326-93, 3.4 of this standard); 2) The cable lowering speed and lifting speed are modified (5.3.1 of SY/T5326-93, 6.2.1 of this standard); 3) The clauses of SQ691 perforating coring instrument in conjunction with impact coring instrument are deleted (Chapter 1 of SY/F5326-93); 4) The ground resistance of each line of the coring instrument, the ground wire and the insulation between the lines are deleted. Specific requirements for the edge (4.3 of SYT5326-93 version);
5) Added the clause that when the well temperature is higher than 130C or the depth is greater than 3800m, the wall coring operation should use the corresponding heat-resistant gunpowder bag; 6) Added the clause that the coring gun should stop using when the coring gun body is deformed, the trajectory of the coring device is seriously deformed, and the emissivity does not meet the requirements.
Appendix A of this standard is a normative appendix
This standard was proposed by the Petroleum Well Logging Professional Standardization Committee and is under the jurisdiction of this standard. The responsible drafting unit is Dagang Oilfield Group Well Logging Company. The participating drafting units of this standard are Jianghan Oilfield Well Logging Engineering Department. The main drafters of this standard are Tan Jiashun, Li Yunping and Li Bin. The previous versions of the standards replaced by this standard are: SY/T 5326-88, SY/T 5326--93. 5Y/T 5605- 93.n
1 Scope
Technical regulations for impact-type and wall coring
SY/T 5326—2002
This standard specifies the indoor preparation of impact-type wellbore coring tools, the quality requirements, safety regulations and core acceptance of each process of wall coring on-site construction:
This standard is applicable to open hole and medium step-by-step selectively controlled impact-type wall coring tools used in conjunction with CNC perforating coring tools and CNC logging tools for wall coring operations. Other types of instruments can be used for reference. 2 Normative references
The clauses of the following documents become the clauses of this standard through reference in this standard: For all references with dates, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties reaching an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all references without dates, the latest versions are applicable to this standard. SY5436 Safety regulations for storage, transportation and use of explosives in petroleum perforation and well wall coring 3 Quality requirements
3.1 Non-wall coring should be designed and constructed according to the layers, number of particles, depth table, parallel structure and expected lithology required by the geological department. The coring position shall be marked on the pre-drawn reference curve with colored horizontal lines by the geological department. 3.2 The measured tracking curve shall be basically consistent with the pre-drawn reference curve in shape, with a relative error of less than 10%, and the layers shown can be clearly distinguished. The depth ratio of the tracking curve shall be the same as the depth ratio of the reference curve (generally 1:200). 3.3 The selected gear should be consistent with the actual situation, and the depth error of the coring position is 0.21m3.4 The core obtained should generally meet the following requirements: the core diameter is not less than 85% of the inner diameter of the core tube used, and the core length is not less than 5% of the length of the core tube used.
4 Indoor preparation of the coring device
4.1 The temperature resistance, sealing and pressure resistance of the wall coring device should meet the requirements of the on-site construction design. The threaded connections of each part are tight, and the threads are complete and not loose. If the coring gun body is deformed, the trajectory of the coring device is severely deformed, and the emissivity does not meet the requirements, the coring device should be stopped. 4.2 The resistance of each line to the ground, the insulation resistance to the ground and the insulation resistance between the lines should meet the construction design requirements. 4,3 The emission capacity is not less than 90%. The calculation of the emission capacity is shown in Appendix A. 4.4 The overall working status needs to be checked by the calibration device. Flexible and accurate replacement and reliable selection and emission are achieved. After checking, place the selector gear in the "ready" gear position.
4.5 The selector should be installed firmly, the axial direction should not be tilted, and the maximum installation outer diameter should not exceed the base of the ignition transformer. 4.6 The gunpowder bag should meet the following requirements:
a) Have good ignition performance, and the ignition delay time should be less than 1s: b) Various gunpowder bags with different quantities have obvious signs to distinguish them, and the gunpowder bag with the same amount of powder should have a small error (.1gc). The DC resistance of the ignition bridge wire should meet the product design requirements. 4.7 The core barrel assembly shall meet the following requirements:
a) 1% of the new core barrel batch shall be sampled for inspection, and various indicators shall meet the design requirements; b) The reused core barrel shall be threaded and tightened, the drainage hole shall be unobstructed, without damage or cracks, and various indicators shall not be lower than the original design requirements;
NY/T 5326-24H02
) The steel wire rope shall not be broken or damaged, the lock shall be firm, and the tension shall meet the design requirements: According to the size of the core and the condition of the gun body, a steel wire rope of appropriate length shall be selected.
5 Preparation before construction
5.! Receive and confirm the core collection task book, base beach curve and smoke filling depth inspection notice. 5.2 Receive and confirm the corer and required materials and accessories. 5.3 Check the performance of instruments, winches, parallel ports and other equipment and the insulation of cables and 11 poles in separate items. 5.4 Require the geological personnel to participate in the pre-shift meeting of the construction team to verify the drilling structure, drilling performance, formation optical properties, etc. and formulate the following process plan. 6 On-site construction 6.1 Gun loading process 6.1.1 Remove rust from the chamber contacts and ballistic steps of the parallel wall corer, and conduct an overall inspection of the parallel wall corer according to the provisions of 4, 1, 4.3, and 4.5. 6.1.2 Fasten the selected core finger assembly to the parallel wall corer according to the serial number, and select different specifications of core barrel size, wire rope length and powder bag according to the coring depth, drilling fluid density, the size of the parallel hole at the coring position, and the formation optical properties. When the well temperature is higher than 130T or the borehole depth is higher than 3800m, the parallel wall coring operation should use the corresponding fireproof powder. 6.1.3 Use a special ohmmeter to check the resistance value of the ignition bridge wire of the gunpowder bag, and put the qualified gunpowder bag into the powder bag. According to the serial number, the delivered core tube assembly is firmly tied to the well wall corer. After installation, tighten the non-air screws. After installation, check and store again. The ignition bridge wire and the chamber point contact should be good.
6.1.4, use the core control instrument to check the selector, the shifting operation should be normal, and then install it on the open wall corer. After installation, check the selector frequency, powder bag test, and ignition system should all be normal. 6.1.5 Check that the selector jumps, ignites and outputs should be normal, control the selector gear to connect the first ignition contact position, and then install it on the wall corer.
6.2 Cable operation regulations
6.2.1 The lowering speed is not more than 4000m/h. The lifting speed after ignition is not more than 3000m/h. 6.2.2 The speed of lifting through the casing shoe 50m in front and 30m behind shall not exceed 1000m/h: 6.2.3 When the lifting distance is 200m from the lifting port, the speed is less than 1000m/h, and the coring gun is slowly lifted out of the wellhead under the command of the lifting port worker. 6.3 Construction process
6.3.1 Connect the instrument vehicle, winch and derrick to the same potential with wires. 6.3.2 Install wellhead equipment.
6.3.3!1 Combine guns, command lifting, and lower the well wall coring device into the well. 6.3.4 Adjust the ground instrument and check the lower and parallel circuits. 6.3,5 Input the relevant data required for coring on the computer. 6.3.6 Start the coring procedure and monitor the operation of the coring device during the lowering process. The tracking curve should be normal and without distortion. The GR curve is usually used as the tracking line:
6.3.7 When the instrument is lifted up, use the core measurement and real-time command to adjust the reference curve to the same depth as the tracking curve: 6.3.8 When coring automatically, the speed will be reduced to 360m/h before reaching the coring depth. The coring program will ignite and coring in sequence according to the input coring depth, and record the curve and core mark; when igniting the core manually, the car will stop at the coring depth, and a special person will issue an ignition command, ignite after shifting gears, and then lift up, ignite and coring in sequence according to the coring depth from deep to shallow, and record the curve and coring mark. 6.3.9 After taking the last core, the ignition power supply should be turned off immediately, and the well wall coring device should be pulled out and connected. 6.3.1 The core depth, ignition position and core barrel should be consistent, and the cores should be delivered to the geological department according to the number: 6.3.11 Calculate the emission rate and recovery rate, and fill in the relevant reports, and the geological department will sign. The calculation formulas of the emission rate and recovery rate are shown in Appendix 2
7 Core acceptance
7.1 The core results are handed over to the geological personnel by the coring team. Check and accept item by itemSY/T5326—2002
7.2 When the lithology of the core is not consistent with the predetermined lithology, it is necessary to take another core at the predetermined core depth: if the lithology is still the same as the original core, this shall prevail. 7.3 After the acceptance is completed, the geological personnel and the construction team leader shall sign the construction report together. 8 Safety requirements
8.1 The storage, transportation and use of explosives shall be carried out in accordance with the provisions of SY5436: During shallow panning operations: relevant regulations shall be met. 8.2 The workers of this type must undergo professional technical knowledge training and obtain a certificate before they can take up their posts. 8.3 Construction should be suspended when it rains heavily, the lighting equipment is not suitable, and the wind force is greater than level 6. According to the safety regulations, pyrotechnics should be properly protected. Before construction, check the instrument vehicle, winch, and frame to the ground to prevent leakage. 8.5 The on-site loading of guns should be carried out in the duty room of the team. If there is no duty room, a safe area should be selected and a dangerous goods construction area sign should be set up. Smoking and using open flames are strictly prohibited on site. The explosion-proof box should be locked and kept in double storage in time. 8. Check: When connecting the corer, the cable core must be discharged to the ground first. Then Then connect the lead wire of the coring device: 8.7 During the coring process, the coring device should not stay in the naked eye for more than 3 minutes. It is not allowed to stop at one place and fire continuously. 8.8 When eliminating the duds of the coring device that have not been fired, choose a safe place outside the room, lift the core basket, and make the trajectory of the coring device face the ground: power on and detonate. When detonating, personnel should stay away from the sides of the gun body by more than m: Check whether the trajectory of the coring device faces the ground after each explosion.
SY/I 5326—2002
Appendix A
[Normative Appendix]
Calculation of relevant parameters
The calculation of the launching capacity, launching rate, and harvest rate of the wall coring device is shown in formula (A.1), formula (A.2), and formula (A.3). Q=NinstalledN×100%
Pfat= N shots/N actual load×100%
P received—N received/N×100%
Wuzhong:
and wall coring firing capability:
N loadable—the number of pellets that can be loaded in the coring device;
N designed—the number of pellets designed in the coring device;
a firing rate;
N shots—the actual number of pellets fired;
N actual load
the actual number of pellets loaded:
P' received—the harvest rate;
N actual received
the actual number of qualified pellets harvested.
.-(A.1)
...(A.2)
.(A.3)
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