CN117993837A - Perforation completion scheme compiling geological engineering integrated decision-making method - Google Patents
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Abstract
The invention provides a perforation completion scheme compiling geological engineering integrated decision-making method, and relates to the technical field of geological engineering integrated decision-making. The perforation completion scheme programming geological engineering integrated decision-making method comprises the following steps: s1, optimizing perforation layers, namely optimizing the perforation layers of a water drive well, a chemical drive well and a natural gas well by defining parameter rules according to target layer properties, injection and production relations, use conditions and sealing quality judgment rules established by researching block basic data and single well data and expert experience; S2-S5: and (3) geological design of perforation completion. By establishing perforation horizon optimization, geological design, engineering design and operation construction design whole process integrated network closed-loop management, professional technicians work cooperatively on the same platform, intelligent optimization of scheme design, automatic scheme generation, data circulation networking and work management transparentization are realized, and scheme programming speed and level are improved.
Description
Technical Field
The invention relates to the technical field of geological engineering integrated decision-making, in particular to a perforation completion scheme compiling geological engineering integrated decision-making method.
Background
The oil field development needs to compile a great number of perforation completion geological schemes, engineering schemes and operation construction schemes each year, and from the aspect of scheme compiling process, the scheme compiling content is complex, the related data is more, and the collecting process is long; from the aspect of scheme programming precision, the oil field development enters the later stage of high water content, the digging difficulty is larger and larger, the influence of poor standardization of manual operation and working experience of personnel is caused, and the scheme design precision is also larger; from the aspect of scheme circulation process, scheme compiling and auditing relate to multiple units and departments, circulation chain is long, and scheme and data circulation labor cost is high.
The integrated decision-making method for perforating completion scheme compiling geological engineering is provided by a person skilled in the art in order to solve the problems of low working efficiency, great influence of artificial experience on accuracy, more geology, engineering, construction design units, more departments and low circulation chain length efficiency of the traditional perforating completion scheme compiling method, and simultaneously in order to reduce the working strength of scheme compiling and improve the scheme compiling speed and level.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an integrated decision-making method for perforating completion scheme programming geological engineering, which solves the problems of low working efficiency, long circulation chain and low efficiency of the original perforating completion scheme programming.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a perforation completion scheme compiling geological engineering integrated decision-making method comprises the following steps:
S1: perforation horizon preference
According to the target layer property, injection and production relation, use condition and sealing quality judgment rules established by researching block basic data and single well data and expert experience, then optimizing perforation layers of water drive wells, chemical drive wells and natural gas wells by defining parameter rules;
s2: geological design of perforation completion
Design parameters and rules are given according to theoretical research and field expert research experience, and parameter rules can be flexibly customized according to oil reservoir characteristics, so that well completion mode optimization, perforation depth calculation, new well stratum pressure prediction and new well productivity prediction can be performed;
S3: perforation completion engineering design
According to the design parameters and rules given by theoretical research and field expert experience, the parameter rules can be flexibly customized according to the characteristics of oil reservoirs, and five designs of a transmission mode, a perforating gun bullet, a phase hole arrangement format, a negative pressure mode and a completion fluid system can be sequentially completed;
S4: perforating operation construction design
According to design parameters and rules given by theoretical research and field expert experience, the perforating operation construction string design, automatic perforation depth correction and automatic combined perforation are completed;
S5: perforation completion scheme management
And (3) carrying out centralized management on all schemes and data, and recording the change condition of the schemes, the circulation condition of the schemes, the implementation condition of the schemes, the data exchange of the schemes and the output of the schemes in real time.
Preferably, the step S1 preferably includes three steps of perforation principle technical limit, automatic selection of perforation layer and determination of perforation layer.
Preferably, the well completion geological scheme in the step S2 comprises the steps of perforation calculation, productivity prediction, common perforation scheme production, flow-limiting perforation method generation, scheme production of other perforation modes and the like.
Preferably, the perforating completion engineering design in the step S3 comprises four steps of basic data management, completion process optimization, completion engineering scheme and design auditing submission.
Preferably, the perforating operation construction design in the step S4 comprises six steps of basic data rechecking, early preparation and task allocation, design change management, construction scheme design, construction result management and design auditing and submitting.
Preferably, the perforation completion scheme management in the step S5 includes five steps of scheme collaboration, scheme change, scheme completion status, data exchange and perforation scheme summarization.
Preferably, the well completion geological scheme comprises the steps of perforation calculation, productivity prediction, common perforation scheme production, flow-limiting perforation method generation, and other perforation mode scheme production, wherein the well completion mode flow-limiting method well completion rule is that more than 10 reservoirs are required to be fractured (reference value) within a ① well interval span of more than 50 m; ② The thickness of the interlayer between small layers is mostly less than 1.5m (only the fracture interval is divided); ③ The number of small layers to be fractured in a single fracturing layer interval is more than 4; for another example, the interval consolidation perforation depth calculation rule: when the distance between the two perforation layers is more than or equal to 0.3m, namely the distance between the bottom depth of the upper perforation layer and the top depth of the lower perforation layer is less than or equal to 0.3m, the perforation top depth is equal to the top depth of the upper sandstone, and the perforation bottom depth is equal to the bottom depth of the lower sandstone.
Preferably, in the step S5, the technical limit of selecting oil pipe transmission is ① open-hole sections greater than 4 and the length of the open-hole section is greater than 16m; ② A high pressure reservoir having a pressure coefficient greater than 1.2 and less than or equal to 1.4; ③ A highly deviated well, a directional well (well deviation angle > 20 °), a horizontal well; ④ High gas wells, heavy oil wells, complex wells, wells with high requirements for well control due to abnormally high pressures in the well.
The invention provides a perforation completion scheme compiling geological engineering integrated decision-making method. The beneficial effects are as follows:
according to the invention, through establishing perforation horizon optimization, geological design, engineering design and operation construction design integrated network closed-loop management, professional technicians work cooperatively on the same platform, intelligent optimization of scheme design, automatic generation of scheme, networking of data flow and transparency of work management are realized, the working strength of scheme programming is reduced, the scheme programming speed and level are improved, the smooth progress of productivity construction is effectively ensured, and a solid foundation is laid for subsequent effective development.
Drawings
FIG. 1 is a schematic flow chart of the overall method of the present invention;
FIG. 2 is a schematic diagram of a preferred method of perforating horizons of the present invention;
FIG. 3 is a schematic diagram of a perforating completion geological design process of the present invention;
FIG. 4 is a schematic diagram of a perforating completion engineering design methodology of the present invention;
FIG. 5 is a schematic diagram of a perforating operation construction design method of the present invention;
FIG. 6 is a schematic diagram of a perforation completion scheme management method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
as shown in fig. 1-6, an embodiment of the present invention provides a perforation completion scheme for compiling geological engineering integrated decision-making method, comprising the steps of:
S1: perforation horizon preference
According to the target layer property, injection and production relation, use condition and sealing quality judgment rules established by researching block basic data and single well data and expert experience, then optimizing perforation layers of water drive wells, chemical drive wells and natural gas wells by defining parameter rules;
s2: geological design of perforation completion
Design parameters and rules are given according to theoretical research and field expert research experience, and parameter rules can be flexibly customized according to oil reservoir characteristics, so that well completion mode optimization, perforation depth calculation, new well stratum pressure prediction and new well productivity prediction can be performed;
S3: perforation completion engineering design
According to the design parameters and rules given by theoretical research and field expert experience, the parameter rules can be flexibly customized according to the characteristics of oil reservoirs, and five designs of a transmission mode, a perforating gun bullet, a phase hole arrangement format, a negative pressure mode and a completion fluid system can be sequentially completed;
S4: perforating operation construction design
According to design parameters and rules given by theoretical research and field expert experience, the perforating operation construction string design, automatic perforation depth correction and automatic combined perforation are completed;
S5: perforation completion scheme management
And (3) carrying out centralized management on all schemes and data, and recording the change condition of the schemes, the circulation condition of the schemes, the implementation condition of the schemes, the data exchange of the schemes and the output of the schemes in real time.
Before the step S1 is carried out, corresponding data and an intelligent optimization rule base are required to be established, so that the follow-up operation is convenient to carry out.
(1) Intelligent optimization method for perforation completion scheme design
The method and the system establish an unstructured data solution library-entering method and a scheme design intelligent optimization rule library closely surrounding actual working thought and business working flow, and lay a foundation for the research and development of a perforation completion scheme and geological engineering integrated decision-making method.
① Unstructured data de-compiling and library-entering method
When the perforation scheme is compiled, a large amount of oilfield development data materials are used as the basis, and most of the oilfield dynamic, static and test data materials are structured and a database is established at present, but the unstructured data materials such as a sedimentary phase belt chart, a logging curve before and after the casing and the like generated by external software cannot be directly put into storage due to the problems of non-uniform data format, large data quantity and the like. Thus, research has established unstructured data solution library-entry methods.
② Establishing scheme design intelligent optimization rule base
In order to solve the problems of large workload and low precision of manual programming schemes, quantitative control standards are formed by combining optimization principles of perforation horizon optimization, geological design, engineering design and construction design, and a scheme design intelligent optimization rule base is researched and established.
(2) Geological engineering integrated decision-making method
Based on service and system function requirements, a manual working thought is simulated, the current working flow is optimized and improved, and a perforation completion scheme and geological engineering integrated decision-making method is developed.
The method standardizes unstructured data storage application, realizes the tangible of limit standard rules, is popularized and applied in Daqing chlamydia oil fields, and ensures that the high-quality rate of automatic programming of a perforation completion scheme reaches more than 85%. Secondly, has higher work efficiency. According to the method, a working platform is established, the integration of geology, engineering and construction design is realized, various technical data are integrated, technical routes are standardized, the working efficiency is improved, the single-well scheme programming speed is improved by 3-5 times, and the requirements of the surplus oil in the ultra-high water-cut period on the submergence and the rapid construction and production are met.
As shown in fig. 2, the step S1 preferably comprises three steps of perforation principle technical limit, automatic selection of perforation layer and perforation layer, and the thinking of perforation layer preference, perforation completion geological design, perforation completion engineering design, perforation operation construction design and perforation completion scheme management whole process integrated network closed-loop management is realized according to the thinking of unified method, unified data, unified content, unified result, shared design and shared design, fast circulation and smooth communication, and scheme programming intellectualization, scheme generation automation, data circulation networking and work management cooperation are realized.
As shown in fig. 3, the well completion geological scheme in step S2 includes steps of perforation calculation, productivity prediction, production of a common perforation scheme, production of a current limiting method perforation method, production of other perforation mode schemes, and the like, the production of the current limiting method perforation scheme includes two major steps of hole repairing design and scheme production, the hole repairing design step includes three minor steps of hole repairing principle technical limit, hole repairing design and inspection determination, and the scheme production includes two minor steps of the current limiting method perforation geological scheme for the first time and the current limiting method perforation geological scheme for the second time, wherein the two minor steps include six minor steps of basic data, minor perforation depth data, construction requirements, well control prompt, remarks and compilers, auditors, recheckers, approvers and programming time.
As shown in fig. 4, the perforation completion engineering design of step S3 includes four steps of basic data management, completion process optimization, completion geological scheme and design audit submission, wherein the basic data management includes five small steps of well basic condition, transmission mode, perforation gun selection, phase hole layout format, negative pressure mode and completion fluid system.
As shown in fig. 5, the perforating operation construction design in step S4 includes six steps of basic data review, preliminary preparation and task allocation, design change management, construction scheme design, construction result management and design audit submission, such as completion mode current limiting method completion rules: ① More than 10 reservoirs with the span of the well section being more than 50m are all required to be fractured (reference value); ② The thickness of the interlayer between small layers is mostly less than 1.5m (only the fracture interval is divided); ③ The number of small layers to be fractured in a single fracturing layer interval is more than 4; for another example, the interval consolidation perforation depth calculation rule: when the distance between the two perforation layers is more than or equal to 0.3m, namely the distance between the bottom depth of the upper perforation layer and the top depth of the lower perforation layer is less than or equal to 0.3m, the perforation top depth is equal to the top depth of the upper sandstone, and the perforation bottom depth is equal to the bottom depth of the lower sandstone.
As shown in fig. 6, the perforation completion scheme management in step S5 includes five steps including scheme cooperation, scheme change, scheme completion status, data exchange and perforation scheme summarization, for example, a transmission mode design method, and the technical limit of selecting oil pipe transmission is ① to jet more than 4 open intervals and 16m of open interval length; ② A high pressure reservoir having a pressure coefficient greater than 1.2 and less than or equal to 1.4; ③ A highly deviated well, a directional well (well deviation angle > 20 °), a horizontal well; ④ High gas wells, heavy oil wells, complex wells, wells with high requirements for well control due to abnormally high pressures in the well.
Embodiment two:
Experimental example one: the implementation block is a North west block one region, the oil-containing area of the block is 7.90km 2, the oil well is 303 ports, the water well is 293 ports, and the total well number is 596 ports. The block mining objective section is as follows: the number of layers of the oil layer is 9.7, the thickness of sandstone is 18.2 m, the effective thickness is 12.7 m, and the water content of the block is 96.07%. And according to the optimized standard, optimizing 596 wells, automatically determining the hole-filling layer, generating perforation completion geology and engineering scheme by one key, and synchronously completing the perforation completion operation construction scheme. The average thickness of the single well shot sandstone is 18.9m, the effective thickness is 13.3m, the perforation correspondence reaches 100%, the scheme high-quality rate reaches more than 91%, the scheme programming time is increased to 12 ports/day, the efficiency is improved by 3 times, and the block production schedule is advanced by 1 month compared with the scheme.
Experimental example two: the implementation block is a Daqingsal map oil field south five area, and the target well is an upward polymer flooding hole supplementing well. The oil-containing area of the block is 11.54km 2, the oil well 313, the water well 262 and the total well number 575. The block development objective layer section is as follows: sai+SaII 1-4 oil layer, 12 deposition units, sandstone thickness of 14.1m, effective thickness of 5.8m, and water content of 95.39% in block. And according to the optimal selection standard, the number of the optimal wells 575, automatically determining the hole-filling layer, generating perforation completion geology and engineering scheme by one key, and synchronously completing the perforation completion operation construction scheme. The average thickness of the single well shot sandstone is 14.1m, the effective thickness is 5.8m, the perforation correspondence reaches 100%, the scheme high-quality rate reaches more than 90%, the efficiency is improved by 3 times, and the block production schedule is advanced by more than 40 days than the schedule.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The perforation completion scheme programming geological engineering integrated decision-making method is characterized by comprising the following steps of:
S1: perforation horizon preference
According to the target layer property, injection and production relation, use condition and sealing quality judgment rules established by researching block basic data and single well data and expert experience, then optimizing perforation layers of water drive wells, chemical drive wells and natural gas wells by defining parameter rules;
s2: geological design of perforation completion
Design parameters and rules are given according to theoretical research and field expert research experience, and parameter rules can be flexibly customized according to oil reservoir characteristics, so that well completion mode optimization, perforation depth calculation, new well stratum pressure prediction and new well productivity prediction can be performed;
S3: perforation completion engineering design
According to the design parameters and rules given by theoretical research and field expert experience, the parameter rules can be flexibly customized according to the characteristics of oil reservoirs, and five designs of a transmission mode, a perforating gun bullet, a phase hole arrangement format, a negative pressure mode and a completion fluid system can be sequentially completed;
S4: perforating operation construction design
According to design parameters and rules given by theoretical research and field expert experience, the perforating operation construction string design, automatic perforation depth correction and automatic combined perforation are completed;
S5: perforation completion scheme management
And (3) carrying out centralized management on all schemes and data, and recording the change condition of the schemes, the circulation condition of the schemes, the implementation condition of the schemes, the data exchange of the schemes and the output of the schemes in real time.
2. The integrated decision-making method for perforating and completion scheme planning geological engineering according to claim 1, wherein the method comprises the following steps of: and the step S1 is preferably carried out on the perforation layer of the water drive well and comprises three steps of perforation principle technical limit, automatic perforation layer selection and perforation layer determination.
3. The integrated decision-making method for perforating and completion scheme planning geological engineering according to claim 1, wherein the method comprises the following steps of: the well completion geological scheme in the step S2 comprises the steps of perforation calculation, productivity prediction, common perforation scheme generation, flow-limiting perforation method generation, scheme generation of other perforation modes and the like.
4. The integrated decision-making method for perforating and completion scheme planning geological engineering according to claim 1, wherein the method comprises the following steps of: the perforating completion engineering design in the step S3 comprises four steps of basic data management, completion process optimization, completion engineering scheme and design auditing submission.
5. The integrated decision-making method for perforating and completion scheme planning geological engineering according to claim 1, wherein the method comprises the following steps of: the perforating operation construction design in the step S4 comprises six steps of basic data rechecking, early preparation, task allocation, design change management, construction scheme design, construction result management and design auditing and submitting.
6. The integrated decision-making method for perforating and completion scheme planning geological engineering according to claim 1, wherein the method comprises the following steps of: the perforation completion scheme management in the step S5 comprises five steps of scheme cooperation office, scheme change, scheme completion status, data exchange and perforation scheme summarization.
7. A perforation completion scheme planning geological engineering integrated decision-making method according to claim 3, wherein: the well completion geological scheme comprises the steps of perforation calculation, productivity prediction, common perforation scheme production, flow-limiting method perforation method generation, and other perforation mode scheme production, wherein the well completion mode flow-limiting method well completion rule is ① that the span of a well section is more than 50m, and more than 10 reservoirs are all required to be fractured (reference values); ② The thickness of the interlayer between small layers is mostly less than 1.5m (only the fracture interval is divided); ③ The number of small layers to be fractured in a single fracturing layer interval is more than 4; for another example, the interval consolidation perforation depth calculation rule: when the distance between the two perforation layers is more than or equal to 0.3m, namely the distance between the bottom depth of the upper perforation layer and the top depth of the lower perforation layer is less than or equal to 0.3m, the perforation top depth is equal to the top depth of the upper sandstone, and the perforation bottom depth is equal to the bottom depth of the lower sandstone.
8. The integrated decision-making method for perforating and completion scheme planning geological engineering according to claim 1, wherein the method comprises the following steps of: the technical limit of oil pipe transmission in the step S5 is ① that the length of the injection well section is 16m greater than 4 injection well sections; ② A high pressure reservoir having a pressure coefficient greater than 1.2 and less than or equal to 1.4; ③ A highly deviated well, a directional well (well deviation angle > 20 °), a horizontal well; ④ High gas wells, heavy oil wells, complex wells, wells with high requirements for well control due to abnormally high pressures in the well.
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