SY/T 6510-2000 Technical requirements for design of steam injection development scheme for heavy oil fields
Some standard content:
ECS 75.180.99
Registration No.: 8210-20H1
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY/T 6510--2000
Technical requirement for steam injection development projectdesign of heavy oil rcservoir2000- 12 -25 Issued
State Administration of Petroleum and Chemical Industry
2001-001 Implementation
SY/T 6510—2000
1 Scope
2 References
3 Principles of development plan design
4 Contents of development plan design
5 Requirements for the preparation of development plan report
SY/T6510—2000
This standard is prepared according to the 1999 petroleum and natural gas industry standard revision project plan of the State Petroleum and Chemical Industry Bureau. This standard mainly refers to national standards such as GBm269—88 Petroleum Reserve Specifications and industry standards such as SY/T61911996 Technical Requirements for Heavy Oil Reservoir Description, absorbs the methods and technologies of domestic heavy oil field development plan preparation, and systematically stipulates the principles, contents and preparation requirements of heavy oil field steam injection development plan design. Its purpose is to make the design of steam injection development plan for heavy oil fields in my country systematic, standardized and standardized, and improve the level of steam injection development plan design for heavy oil fields. This standard was proposed by China National Petroleum Corporation. This standard is under the jurisdiction of the Oil and Gas Development Professional Standardization Committee. Drafting units of this standard: Petroleum Exploration and Development Research Institute of Henan Oilfield Branch of Sinopec Corporation, PetroChina Exploration and Development Research Institute:
Main drafters of this standard Cui Lianxun Liu Shangqi Li Aiguo Liu Xinfu Zhang Changzhen Ma Yuxia
Jia Yupei
1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Technical requirements for steam injection development project design of heavy oil reservoir Technical requirements for steam injection development project design of heavy oil reservoir This standard specifies the preparation method, design content and technical requirements for steam injection development project design of heavy oil reservoir. 65102000
This standard is applicable to the steam injection development of sandstone and conglomerate type heavy oil reservoirs and steam drive development program design. Other types of heavy oil reservoirs can be implemented as a reference.
2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in the storage mark: When this standard is published, the versions shown are valid: All standards will be revised, and the parties using this standard should explore the possibility of using the latest version of the following standards, G3n269- 88 Shishan Reserves Specification
SY/T6102--2000 Contents and requirements of dynamic monitoring data for steam injection development of heavy oil reservoirsSY16169--1995 Reservoir classification
SY/T6191-1996 Technical requirements for heavy oil reservoir descriptionSY/T6193-1996 Calibration method for recoverable reserves of heavy oil steam injection Beifa 3 Principles of development plan design
3.1 Comply with national policies and regulations on oil and gas resource development and meet the country's needs for oil and gas resource development. 3.2 Focusing on economic benefits, optimize the design of development plans, improve the utilization rate and recovery rate of heavy oil resources, 4 Contents of development plan design
+.1 Overview of oil production
4.1.1 Geographical situation
4.1.1.1 Geographical location: including the geographical location of the oil field, altitude, topographic and geomorphic features, 4.1.1.2 Transportation conditions: including road, railway and water transportation conditions 4.1.1.3 Climate characteristics: including climate type, annual precipitation and temperature 4.1.1.4 Regional characteristics: including water sources, regional economic development level 4.1.2 Exploration overview
Time and structural location of the discovery: geophysical workload, survey line density and results, operation and evaluation of the discovery, comparison books and coring, analysis and chemical evaluation data; and. Well logging interpretation results and formation testing 4.1.3 Brief description of oil testing
Approved by the State Administration of Petroleum and Chemical Industry on 20HI-12-25 and implemented on January 2001
SY/T6510—2000
Discovery and or evaluation well testing, thermal or conventional oil testing and gas testing. 4.2 Reservoir description
According to the characteristics of steam injection production of heavy oil reservoirs, the reservoir description content shall refer to SY/T6191. The classification of reservoir types shall be implemented in accordance with SY/T6169. 4.3 Reserve calculation bzxZ.net
4.3.1 The volumetric method is used to calculate geological reserves. 4.3.2 The calculation parameters are determined in accordance with GBn269. 4.3.3 List the geological reserve calculation table (including gas cap gas and solution gas). 4.4 Steam stimulation test production analysis,
Steam stimulation test production should be carried out before steam injection development of heavy oil reservoirs 4.4.1 Based on the steam stimulation test production data, analyze the changing rules of periodic oil production, daily oil production, peak oil production, oil production per unit thickness, water content, water recovery rate, pressure drop rate and oil-gas ratio. 4.4.2 Based on the steam stimulation test production data, analyze the influence of steam injection pressure, steam dryness, steam injection intensity and well soaking time on the test production development indicators.
4.4.3 Based on the steam stimulation test production data, analyze the influence of wellbore viscosity reduction and lifting technology on the test production development indicators. 4.4.4 Based on the steam stimulation test production situation, evaluate whether the reservoir geology and process technology conditions are suitable for steam injection development. 4.5 Reservoir engineering design
4.5.1 Selection of development method
Based on the results of oil testing and test production, reservoir engineering analysis and physical and numerical simulation research are carried out, and the optimal production method is selected through economic and technical evaluation.
4.5.1.1 Steam injection shall be directly adopted for the exploitation of extra-heavy oil and super-heavy oil reservoirs. 4.5.1.2 Conventional depressurization exploitation may be conducted before steam injection development for ordinary heavy oil I-2 reservoirs. 4.5.1.3 Study the conditions, timing and technical preparation for the transition from conventional depressurization exploitation to steam injection development and from steam injection to steam drive development. 4.5.2 Principles for the division and combination of development strata
4.5.2.1 The structural morphology, oil layer physical properties, pressure system and hydrodynamic system in the same strata are relatively similar. 4.5.2.2 The reserves controlled by a set of independent development strata should be greater than the economic limit reserves. 4.5.2.3 The oil layer thickness and net-to-total thickness ratio of a set of independent development strata should meet the requirements of steam injection exploitation. 4.5.2.4 Reservoirs with active edge water drive, bottom water drive and gas cap drive and with independent development conditions can be exploited as a set of strata. 4.5.2.5 The division and combination of strata should take into account the full utilization of injected steam thermal energy to improve its development effect. 4.5.3 Well pattern and well spacing
4.5.3.1 Principles for determining grid connection
a) The type of well pattern should be determined based on the structural morphology, oil-bearing area, oil, gas and water distribution, reservoir physical properties, heterogeneity and the required ratio of injection and production wells;
b) The well pattern categories include vertical well pattern, horizontal well pattern and vertical well and horizontal well combination pattern; c) The scope of well pattern is determined based on the oil-water interface, gas-oil interface, unconformity surface, fault location, oil layer thickness and production capacity; d) Optimize multiple well pattern schemes.
4.5.3.2 Design principles of parallel spacing:
a) Optimize well spacing according to reservoir characteristics and different mining methods; b) According to geological sedimentary phases and oil sand distribution characteristics, analyze the control degree of different well spacing on reserves. The reasonable well network control degree should generally reach more than 80%, and irregular strip reservoirs should also reach more than 70%; c) The recoverable reserves controlled by a single well should not be lower than the economic limit; d) The parallel spacing should meet the requirements of increasing oil production rate as much as possible, shortening investment payback period, and improving the internal rate of return of steam injection development plan. 4.5.4 Perforation principle
SY/T6510-2000
4.5.4.1 The opening degree of vertical wells should be optimized and determined through physical simulation and numerical simulation research based on the thickness of the oil layer, physical property differences and rhythmic characteristics. For edge water reservoirs and bottom water reservoirs, a certain avoidance thickness should also be determined based on the distance between the oil well and the edge water and bottom water.
4.5.4.2 For horizontal wells completed by perforation, the opening degree and perforation orientation are optimized and determined through physical simulation and numerical simulation research.
4.5.5 Determination of injection and production parameters
On the premise of calculating the heat loss of the parallel tube, the injection and production parameters of different production methods are optimized. 4.5.5.1 Steam injection and production parameters include: a) Optimize steam injection pressure, steam injection rate, steam dryness, steam injection intensity and well soaking time; b) Optimize the incremental amount of steam injection in a cycle; c) Optimize the drainage rate;
d) Optimize the daily oil production of steam injection cycle. 4.5.5.2 Steam drive injection and production parameters include:
a) Optimize steam injection pressure, steam injection rate, steam dryness and well group production and injection ratio; b) Calculate the economic limit oil-steam ratio based on the current crude oil price and crude oil production cost under the development technology level. 4.5.6 Development index prediction
Use numerical simulation method and SY/T6193 to predict the heavy oil steam injection development index. 4.5.6.1 Steam throughput development indicators:
a) The cyclic development indicators of steam throughput of a single well include cyclic steam injection volume, production time, daily oil production, daily water production, cyclic oil production, cyclic water production, cumulative oil production, cumulative water production, cyclic oil-gas ratio, cumulative oil-gas ratio, water recovery rate and degree of recovery; b) The cyclic development indicators of steam throughput of a block include the number of wells put into production, production time, annual steam injection volume, cumulative steam injection volume, daily oil production, annual oil production, cumulative oil production, daily water production, annual water production, cumulative water production, comprehensive water content, annual oil-gas ratio, cumulative oil-gas ratio, water recovery rate, oil production rate and degree of recovery. 4.5.6.2 Steam drive development indicators: including the number of wells put into production, the number of steam injection wells, the number of oil production wells, production time, daily steam injection volume per well, daily oil production per well, daily water production per well, daily steam injection volume, annual steam injection volume, cumulative steam injection volume, daily oil production, annual oil production, cumulative oil production, daily water production, annual water production, cumulative water production, comprehensive water content, instantaneous oil-steam ratio, annual oil-steam ratio, cumulative oil-steam ratio, production-injection ratio, oil production rate and recovery degree.
4.5.7 Monitoring system
The monitoring content and requirements shall be implemented in accordance with SY/T6102. 4.6 Main contents and requirements of drilling and production engineering design 4.6.1 Drilling and completion engineering design
4.6.1.1 Design a reasonable wellbore structure, casing program, steel grade, thread type, size and completion method according to the design well properties and formation conditions.
4.6.1.2 Reasonably design the properties of drilling fluid, the method of drilling into the oil layer and the oil layer protection technology. 4.6.1.3 Use sand-added cement and prestressed cementing. The cementing quality must ensure the isolation of underground oil, gas and water layers to avoid channeling outside the pipe and cement returning to the ground.
4.6.1.4 Design the sand settling pocket in the casing according to the sand production of the test well. 4.6.1.5 Determine the logging series according to the reservoir geology and drilling fluid characteristics. 4.6.1.6 When completing the well by perforation, the gun type, perforating bullet type, perforation density and completion fluid should also be reasonably selected. 4.6.1.7 For a specific development unit, wells should be arranged, drilled and completed at one time. 4.6.1.8 During the drilling process in old areas with multiple layers, the surrounding steam injection wells should be required to stop injection. 4.6.2 Oil production engineering design
4.6.2.1 Determination of wellhead devices: including determination of high temperature resistance conditions and pressure levels as well as special types of wellhead devices such as test wells. 3
SY/T 6510--2000
4.6.2.2 Selection of pumping equipment: including determination of pumping unit, pumping rod, pump model, pump type and pump hanging depth, etc.: 4.6.2.3 Optimization of tubing string structure,
4.6.2.+ Technical requirements for pretreatment of oil layer and unblocking process before steam injection. 4.6.2.5 Technical requirements for heat insulation of parallel pipe: including requirements for heat insulation method and heat insulation pipe string of parallel pipe: 4.2.6 Technical requirements for viscosity reduction of parallel pipe.
4.6.2.7 Technical requirements for sand control: including technical requirements for early sand control and later sand control, 4.6.2.8 Technical requirements for improving steam injection effect and technical requirements for reservoir protection.
4.7 Main contents and requirements of surface engineering design. 7.1 Requirements for steam injection system: including steam injection boiler, steam injection station, distribution station, pipeline network process, insulation measures, insulation and anti-corrosion requirements; 4.7.2 Requirements for non-steam metering, distribution and steam-water separation process of steam injection; 4.7.3 Oil, gas and water metering method for single well.
4.7.4 Requirements for oil, gas and water gathering and transportation: including requirements for cooling, separation, dehydration, sewage treatment and reuse, sand removal and insulation measures for produced fluids
4.7.5 Requirements for environmental protection
4.7.6 Requirements for water supply, power supply, road access and communication, 4.8 Economic evaluation
4.8.1 Principles and requirements for economic evaluation
Economic evaluation must comply with the industrial policy, investment policy and relevant laws and regulations of the state's economic development: based on the capacity forecast of the development plan, using the economic analysis parameters stipulated by the oil and gas industry, and complying with the principle that the calculation of costs and benefits has a comparable basis to ensure the objectivity and fairness of the evaluation:
4.8.2 Investment and cost forecast
4.8.2.1 Total investment forecast ( Including exploration investment, development investment, ground construction investment, system engineering investment and working capital) 4.8.2.2 Oil production cost forecast:
4.8.2.3 Other cost forecast
4.8.2.4 Sales revenue and tax calculation,
4.8.3 Economic evaluation index system
The economic evaluation index system includes investment profit rate, investment profit and tax rate, investment return period, net profit and internal rate of return, 4.8.+Uncertainty analysis
4.8.4.1 Profit and loss balance analysis:
4.8.4.2 Sensitivity analysis:
4.8.4.3 Risk analysis
4.9 Scheme comparison and optimization
Evaluate the technical and economic indicators of each development scheme and screen out the recommended scheme. 4.1 Requirements for the implementation of the development plan
+.1 Non-, 1 propose the sequence of drilling, production and investment in the development block, 4.10.2 propose the development test plan and requirements +.10.3 propose the requirements for data acquisition
5 Requirements for the preparation of the development plan report
5.1 Main contents
5.1.1 Oil rain overview:
5.1.2 Reservoir description
5.1.3 Reserve calculation
5.1.4 Steam storage and spitting test production analysis.
5.1.5 Reservoir engineering design.
5.1.6 Main contents and requirements of drilling and production project design.
5.1.7 Main contents and requirements of surface project design:
5.1.8 Economic evaluation.
5.1.9 Comparison and optimization of plans
5.1.10 Requirements for the implementation of the plan.
5.2 Drawings and Schedules
5.2.1 Reservoir Geology Drawings and Schedules:
5.2.1.1 Drawings include:
a) Geographic location map of oilfield;
b) Geomorphology map of oilfield;
c) Regional geological structure map of oilfield;
d) Exploration results map;
e) Trial curve;
f) Trial production curve:
g) Comprehensive columnar diagram of reservoir:
h) Oil-bearing area map;
i) Reservoir profile map;
j) Oil layer connectivity map;
k) Sedimentary facies research results map;
1) Small layer plan map;
SY/T 6510—2000
m) Contour map of oil layer thickness, effective thickness, porosity, permeability, and oil saturation; n) Contour map of oil layer kh;
u) Contour map of fluid parameters plane:
P) Contour map of oil layer top and bottom isolation and interlayer in the oil layer; q) Capillary pressure curve;
t) Original viscosity-temperature curve:
s) High temperature relative permeability curve:
t) Relationship curve between oil recovery efficiency and injection multiples: u) Relationship curve between original formation pressure and altitude depth: V) Relationship curve between original formation temperature and depth rise: w) Oil geological model map.
5.2.1.2 The appendices include:
a) Oil, gas and water property analysis table;
l) Oil layer temperature and pressure measurement data table;
c) Oil layer well test and oil test results table;
d) Test results table;
e) Lithology analysis table:
f) Reserve calculation table:
5.2.2 Reservoir engineering design drawings and appendices. 5.2.2.1 The attached drawings include:
SY/T 6510—2000
a) Single well (or open group) steam production dynamic history fitting curve; b) Injection and production parameters and steam injection development effect relationship curve; c) Reservoir temperature, pressure and oil saturation distribution diagram before steam injection and steam flooding; d) Reservoir temperature, pressure and oil saturation distribution diagram at different stages of steam flooding; d) Dynamic characteristic prediction curve of each development plan; f) Development index prediction curve of recommended plan; g) Economic benefit analysis curve of recommended plan; h) Development well location deployment diagram of recommended plan;
|) Monitoring system deployment diagram.
5.2.2.2 The appendix includes:
a) Table of main reservoir parameters and fluid parameters of numerical simulation; 15) Comparison table of injection and production parameters on steam injection production effect; 2) Forecast table of recommended development plan indicators; d) Economic benefit analysis table
5.2.3 Drilling and production program design drawings and appendices, 5.2.3.1 The drawings include:
a) Body structure diagram;
b) Equipment diagram;
|) Pipe string structure diagram.
5.2.3.2 The appendix includes:
a) Completion structure data table;
) Drilling performance data table:
c) Completion fluid performance data table:
d) Drilling parameter table;
e) Completion lifting data table:
1) Completion quality requirement data table:
) Lifting process parameter table:
h? Injection and production parameter table,
5.2.4 Surface engineering design drawings and appendix. 5.2.4.1 The drawings include:
a) Steam injection system process flow chart:
b) Gathering and transportation system process flow chart.
5.2.4.2 The attached tables include:
a) Steam boiler parameter table;
|) Technical parameter table of main special facilities of ground engineering 5.3 Cover and page requirements
5.3.1 The name, number, preparation unit and period of the development plan shall be indicated on the cover, and the confidentiality level and period shall be marked in the upper left corner: 5.3.2 The person in charge, compiler, participant, auditor, reviewer, approver and approval date of the development plan shall be indicated on the cover.
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