CN107489414A - Judge CO with constituent content2The method for driving inter well connectivity - Google Patents

Judge CO with constituent content2The method for driving inter well connectivity Download PDF

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Publication number
CN107489414A
CN107489414A CN201610407688.4A CN201610407688A CN107489414A CN 107489414 A CN107489414 A CN 107489414A CN 201610407688 A CN201610407688 A CN 201610407688A CN 107489414 A CN107489414 A CN 107489414A
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CN
China
Prior art keywords
well
concentration
injection
connectivity
judge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610407688.4A
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Chinese (zh)
Inventor
李友全
王丽娜
岳小华
崔淑娟
顾辉亮
李其朋
王明
张勇
郑文龙
郭建福
刘华夏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Exploration and Development Research Institute of Sinopec Henan Oilfield Branch Co
Exploration and Development Research Institute of Sinopec Shengli Oilfield Co
Original Assignee
China Petroleum and Chemical Corp
Exploration and Development Research Institute of Sinopec Henan Oilfield Branch Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Exploration and Development Research Institute of Sinopec Henan Oilfield Branch Co filed Critical China Petroleum and Chemical Corp
Priority to CN201610407688.4A priority Critical patent/CN107489414A/en
Publication of CN107489414A publication Critical patent/CN107489414A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/164—Injecting CO2 or carbonated water

Abstract

The present invention provides one kind and judges CO with constituent content2The method for driving inter well connectivity, this judges CO with constituent content2Driving the method for inter well connectivity includes：Step 1, in injection CO2In preceding and steam injection process, natural gas sample is collected, detects each component content in sample；Step 2, using surveyed data, CO in inspection well is made2Concentration of component with injection length change curve；Step 3, the changing rule of curve is observed, and by the CO in each observation well2The concentration of component CO initial with it2Concentration of component compares, to judge CO2Drive inter well connectivity.This judges CO with constituent content2The method for driving inter well connectivity is carried out under responding curve of well state, normal production and stratum are not injured, can accurately and efficiently judge inter well connectivity, this method cost is low, does not influence crude oil normally produces, this method is applicable not only to conventional oil reservoir, applies also for low permeability and ultra-low permeability reservoirs.

Description

Judge CO with constituent content2The method for driving inter well connectivity
Technical field
The present invention relates to oil field development technical field, especially relates to one kind constituent content and judges CO2Drive inter well connectivity Method.
Background technology
At present, most of oil field enters middle-late waterflooding stage, reservoir heterogeneity aggravation, accurate description reservoir communication Effectively oil field development can be instructed to adjust, improve oilfield exploitation benefit.In oilfield development process, research well formation connects The method of the general character includes：Conventional pressure system analysis, interference test, effective response for water flood method, tracer method, crude oil Physical property changes method of comparison.With the exploitation in oil field, reservoir pressure distribution constantly changes, and some wells do not have timely pressure measurement, The PRESSURE DATA of acquisition is insufficient, therefore, using original formation pressure and barometric gradient judge the method for inter well connectivity by To a definite limitation；Interference test method judges inter well connectivity, and test period is long, costly and influence oil field The completion of production task；Effective response for water flood method and tracer method are suitable for the oil field of waterflooding extraction, and take effect and taken Between it is longer.New judge CO with constituent content we have invented a kind of for this2The method for driving inter well connectivity, solves the above Technical problem.
The content of the invention
It is an object of the invention to provide a kind of change that producing well output gas component in well group is developed by detecting accurately to sentence The method of disconnected reservoir communication.
The purpose of the present invention can be achieved by the following technical measures：Judge CO with constituent content2The method for driving inter well connectivity, This judges CO with constituent content2Driving the method for inter well connectivity includes：Step 1, in injection CO2In preceding and steam injection process, receive Collect natural gas sample, detect each component content in sample；Step 2, using surveyed data, CO in inspection well is made2Component is dense Spend the change curve with injection length；Step 3, the changing rule of curve is observed, and by the CO in each observation well2Concentration of component The CO initial with it2Concentration of component compares, to judge that CO2 drives inter well connectivity.
The purpose of the present invention can be also achieved by the following technical measures：
Step 1 includes；
A, CO is injected2Before, natural gas sample is collected at the production procedure of each well, detects each component content in sample；
B, in gas injection production process, sampling is periodically tracked to each observation well, analysis gas composition, records CO2Concentration.
In step a, if analysis result shows the gas sample of this well without CO2Or CO2Content is low, then continues next step b, enter Row CO2Displacement.
In step 3, with the passage of injection length, if CO2Concentration gradually increases, then proves that injection well connects with this well； If with the increase of injection length, CO2Concentration is substantially unchanged, then proves that injection well does not connect with this well.
Judge CO with constituent content in the present invention2The method for driving inter well connectivity, is carried out, no under responding curve of well state Crude oil is influenceed normally to produce；Cost is low, sampling is convenient, easy；CO2It is a kind of relatively stable gas componant, will not be with original The biochemical reaction of fry dried food ingredients, the reduction, volumetric expansion and increase stratum energy of its energy viscosity of crude, is not injured to stratum, Conventional oil reservoir is applicable not only to, applies also for low permeability and ultra-low permeability reservoirs.Gas composition detection technique is advanced, analysis essence Degree is high, and data are accurately and reliably.
Brief description of the drawings
Fig. 1 judges CO for the present invention's with constituent content2Drive the flow chart of a specific embodiment of the method for inter well connectivity；
Fig. 2 is the CO that well is respectively observed in the specific embodiment of the present invention2Concentration curve.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferred embodiment, And coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 judges CO for the present invention with constituent content2Drive the flow chart of the method for inter well connectivity.
Step 101：Inject CO2Before, natural gas sample is collected at the production procedure of each well of selected block, is detected in sample Each component content.If analysis result shows the gas sample of this well without CO2Or CO2Content is low, then continues in next step, to carry out CO2 Displacement.
Step 102:In gas injection production process, sampling, analysis gas composition, record are periodically tracked to each observation well CO2Concentration.
Step 103:By tracking CO in each observation well2The concentration of gas, obtain each inspection well CO2Concentration changes with time song Line.
Step 104:Pass through Analysis for CO2The production curve of concentration judges the connectedness of reservoir.For every mouthful of observation well, Analysis for CO2 The production curve of concentration.With the passage of injection length, if CO2Concentration gradually increases, then proves that injection well connects with this well； If with the increase of injection length, CO2Concentration is substantially unchanged, then proves that injection well does not connect with this well.
In the instantiation of the application present invention, by taking 142 pieces of trial zones of Fan as an example, the application effect of this method is introduced.
Subjects are the well group of 142 pieces of Fan, and the well group is 7 well patterns.Using centerwell as injection well, 6 mouthfuls of surrounding Well is observation well.Inject CO always in centerwell2Gas, meanwhile, around in 6 mouthfuls of observation wells, periodically take gas sample to carry out Component detects.Draw the CO of each well2Concentration of component curve, judge the connectedness of each observation well and injection well.Fig. 2 is each observation The CO of well2Concentration curve.
Pass through each well CO more than analyzing2Concentration curve can be seen that：The CO of this 3 mouthfuls of wells of F142-2, F141-1, F142-32 Concentration significantly increases with the growth of injection length, therefore this 3 mouthfuls of wells connect with injection well.F142-3、F142-2、 This 3 mouthfuls of wells of F141-1 are with the growth of injection length, CO2Concentration is substantially unchanged, therefore this 3 mouthfuls of wells do not connect with injection well. And observe CO in well2Concentration is higher, illustrates that it is better with the connection situation of injection well.

Claims (4)

1. judge CO with constituent content2The method for driving inter well connectivity, it is characterised in that this judges CO with constituent content2Driving the method for inter well connectivity includes：
Step 1, in injection CO2In preceding and steam injection process, natural gas sample is collected, detects each component content in sample；
Step 2, using surveyed data, CO in inspection well is made2Concentration of component with injection length change curve；
Step 3, the changing rule of curve is observed, and by the CO in each observation well2The concentration of component CO initial with it2Concentration of component compares, to judge CO2Drive inter well connectivity.
2. according to claim 1 judge CO with constituent content2The method for driving inter well connectivity, it is characterised in that step 1 includes；
A, CO is injected2Before, natural gas sample is collected at the production procedure of each well, detects each component content in sample；
B, in gas injection production process, sampling is periodically tracked to each observation well, analysis gas composition, records CO2Concentration.
3. according to claim 2 judge CO with constituent content2The method for driving inter well connectivity, it is characterised in that in step a, if analysis result shows the gas sample of this well without CO2Or CO2Content is low, then continues next step b, carries out CO2Displacement.
4. according to claim 1 judge CO with constituent content2The method for driving inter well connectivity, it is characterised in that in step 3, with the passage of injection length, if CO2Concentration gradually increases, then proves that injection well connects with this well；If with the increase of injection length, CO2Concentration is substantially unchanged, then proves that injection well does not connect with this well.
CN201610407688.4A 2016-06-12 2016-06-12 Judge CO with constituent content2The method for driving inter well connectivity Pending CN107489414A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610407688.4A CN107489414A (en) 2016-06-12 2016-06-12 Judge CO with constituent content2The method for driving inter well connectivity

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115450594A (en) * 2022-09-22 2022-12-09 中国矿业大学 Gas injection displacement effect detection method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101725346A (en) * 2009-12-15 2010-06-09 中国石油大学(华东) Oil deposit inter-well dynamic connectivity inverting method
US20140262255A1 (en) * 2013-03-13 2014-09-18 Gary F. Teletzke Methods for improving the sweep efficiency of gas injection
CN104285034A (en) * 2012-06-08 2015-01-14 普拉德研究及开发股份有限公司 Assessing reservoir connectivity in hydrocarbon reservoirs
CN105019894A (en) * 2015-07-29 2015-11-04 长江大学 Method and system for establishing multilayer oil pool inter-well connectivity model
CN105260550A (en) * 2015-10-23 2016-01-20 中国石油化工股份有限公司 Method for evaluating connection relation between oil wells
CN105587304A (en) * 2014-10-23 2016-05-18 中国石油天然气股份有限公司 Fireflooding ignition monitoring system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101725346A (en) * 2009-12-15 2010-06-09 中国石油大学(华东) Oil deposit inter-well dynamic connectivity inverting method
CN104285034A (en) * 2012-06-08 2015-01-14 普拉德研究及开发股份有限公司 Assessing reservoir connectivity in hydrocarbon reservoirs
US20140262255A1 (en) * 2013-03-13 2014-09-18 Gary F. Teletzke Methods for improving the sweep efficiency of gas injection
CN105587304A (en) * 2014-10-23 2016-05-18 中国石油天然气股份有限公司 Fireflooding ignition monitoring system
CN105019894A (en) * 2015-07-29 2015-11-04 长江大学 Method and system for establishing multilayer oil pool inter-well connectivity model
CN105260550A (en) * 2015-10-23 2016-01-20 中国石油化工股份有限公司 Method for evaluating connection relation between oil wells

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
黄海东等: "CO2驱与埋存中流体运移监测方法与结果", 《科学技术与工程》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115450594A (en) * 2022-09-22 2022-12-09 中国矿业大学 Gas injection displacement effect detection method

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