CN112727452A - Description method for movable water distribution of tight sandstone gas reservoir - Google Patents
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 37
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 69
- 239000002349 well water Substances 0.000 claims abstract description 31
- 239000008398 formation water Substances 0.000 claims abstract description 24
- 230000003068 static effect Effects 0.000 claims abstract description 15
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- 239000012530 fluid Substances 0.000 claims abstract description 13
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 claims abstract description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 12
- 235000020681 well water Nutrition 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 7
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
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- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
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Abstract
The invention discloses a method for describing movable water distribution of a tight sandstone gas reservoir, which relates to the field of natural gas exploration and development and comprises the following steps: collecting static data and dynamic data of the research block; carrying out primary division on the single-well water production types, and dividing the single-well water production types into three types, namely working fluid, formation water and condensate water; making a stratum water ion mineralization degree chart of the single well, and further judging the water production type of the single well; drawing a mineralization degree distribution contour map of the block, and delineating a movable water range by referring to a gas reservoir water classification standard table; making a block single-well water production type distribution diagram, and defining a movable water range again by combining the single-well control area; finally, the range is circled twice, and the dynamic water distribution is determined by combining the production dynamics of a single well. The method has the advantages of combining single-well production data, being simple to operate, being capable of rapidly, efficiently and accurately identifying the movable water distribution of the tight sandstone gas reservoir, and providing scientific basis and theoretical support for subsequent gas reservoir development and scheme establishment and adjustment.
Description
Technical Field
The invention relates to the field of natural gas exploration and development, in particular to a method for describing movable water distribution of a tight sandstone gas reservoir.
Background
At present, most of gas reservoirs which are proved at home and abroad are gas reservoirs with different water flooding degrees, the gas reservoir water invasion can increase the gas reservoir waste pressure, shorten the gas well production time, accelerate the gas well shut-in, finally obtain lower productivity and recovery ratio, and the gas reservoir water outlet and the gas reservoir water invasion can gradually reduce the overall gas reservoir development effect along with the continuous development of the gas reservoir. Secondly, as the development of unconventional oil and gas becomes the key point of gas field development at home and abroad in recent years, the prevention and control of gas well water production are more important for the development of unconventional gas reservoirs with low permeability. Gas well production can be severely compromised by gas reservoir water invasion and gas well water production.
Therefore, it is important to specify the water region distribution position to determine and adjust the gas reservoir development plan, and it is an important issue to study the movable water distribution of the tight sandstone.
The description method of the movable water distribution has few related researches at present, and particularly has few related research data on the movable water distribution research of the tight sandstone gas reservoir. The existing movable water description method mostly depends on building a geological model, and movable water distribution research is carried out through a numerical simulation method, so that the operation is complex, the requirement on the model precision is high, and most of the methods are not dynamically combined with the production of a single gas reservoir well. The CN201410419436.4 patent six-stage modeling method for gas-water distribution characterization of water-bearing carbonate rock gas reservoir researches movable water distribution by using a numerical simulation technology. Patent CN201510165844.6 patent method for determining gas-water relationship by using compact sandstone micro-pore structure determines movable water distribution in gas reservoir by using compact sandstone micro-pore structure, and only researches the movable water distribution by using measured physical property data of gas reservoir, without combining with actual production dynamic data. Therefore, a simple and accurate method for describing the distribution of the movable water of the tight sandstone gas reservoir is urgently needed, and scientific basis and theoretical support are provided for the development of the subsequent gas reservoir and the establishment and adjustment of the scheme.
Disclosure of Invention
The invention aims to provide a method for describing the movable water distribution of the tight sandstone gas reservoir aiming at the defects and shortcomings of the prior art, the method defines the movable water distribution of the tight sandstone gas reservoir and provides reference for compiling and adjusting a subsequent development scheme of the gas reservoir.
The invention is realized by adopting the following technical scheme:
a description method for movable water distribution of a tight sandstone gas reservoir is characterized by comprising the following steps:
step 1, collecting static data and dynamic data of a research block;
step 2, calculating the single-well control area according to the data collected in the step 1, and preliminarily dividing the single-well water production types into three types, namely working fluid, formation water and condensate water, by combining a research block gas reservoir water-based classification standard table;
step 3, using the static data in the step 1 to make a stratum water ion mineralization degree chart of the single well and further judge the water production type of the single well;
step 4, making a mineralization distribution contour map of the block by using the total mineralization data of the single well obtained in the step 2 and combining block boundary data and well position coordinate data, and delineating a movable water range by referring to a gas reservoir water classification standard table;
step 5, making a block single-well water production type distribution map by using the water production type discrimination result of the single well in the step 3 and combining block boundary data and well position coordinate data, and defining a movable water range by combining a single-well control area;
and 6, performing movable water area superposition on the mineralization degree distribution contour map obtained in the step 4 and the single-well water production type distribution map obtained in the step 5, and analyzing movable water distribution characteristics by combining single-well dynamic data.
Further, the static data in step 1 includes: basic data a and single-well water chemistry analysis data b;
the dynamic data includes: producing dynamic data c.
Further, the basic data a in the static material includes: block position a1, block area a2, block boundary coordinates a3, single well coordinates a4, well spacing a 5; the single well water chemistry analysis data b comprises: total mineralization of formation water b1, K++Na+Degree of mineralization b2, Cl—Degree of mineralization b3, Ca2+Degree of mineralization b4, SO4 2—Degree of mineralization b5, Mg2+Degree of mineralization b6, HCO3 —Degree of mineralization b 7;
the c production parameters in the dynamic data include: production date c1, pressure c2, gas production c3, oil pressure c4 and casing pressure c 5.
Furthermore, the main parameters for dividing the water-based classification standard table of the gas reservoir in the step 2 include chloride ion concentration and total mineralization degree of formation water, the chloride ion concentration of the working solution is greater than 10000mg/L, the total mineralization degree is 20-80 g/L, the chloride ion concentration of the condensate water is less than 10000mg/L, the total mineralization degree is less than 20g/L, the chloride ion concentration of the formation water is greater than 20000mg/L, the total mineralization degree is greater than 35g/L, and specific values of different blocks need to be corrected corresponding to related data of the blocks.
Further, in the step 3, a stratum water ion mineralization degree chart is selected according to the chemical composition of produced water, and a plurality of main ion mineralization degrees are selected and plotted according to a set ratio of 1:1, so that water-based characteristic charts of different types are obtained; the ion mineralization parameters used include: k++Na+Degree of mineralization, Cl—Degree of mineralization, Ca2+Degree of mineralization, SO4 2—Degree of mineralization, Mg2+Degree of mineralization, HCO3 —And (4) the mineralization degree, namely the produced water of the gas outlet well can be successfully judged to be stratum water or condensate water and working fluid according to the shape difference of the drawn stratum water ion mineralization degree chart.
Furthermore, the mineralization degree distribution contour map in the step 4 is made by lithograph software, and the used data comprises block boundary coordinate data, single-well position coordinate data and single-well produced water total mineralization degree data; and referring to the classification standard of the total salinity of the formation water in the gas reservoir water-based classification standard table to be more than 35g/L, the block range of the salinity of the tight sandstone gas reservoir more than 35g/L can be defined, namely the distribution range of the movable water of the tight sandstone gas reservoir.
Further, the single-well stratum water discrimination result in the step 5 is divided into a producing stratum water well, a producing condensate water well and a producing working fluid well, the single-well control area is calculated by using the block basic data, the single-well control area of the producing stratum water well corresponding to the single-well control area is defined, and finally the movable water distribution range of the tight sandstone gas reservoir can be obtained.
Further, the combined single-well dynamic data in step 6 includes the following 2 contents:
(1) according to the single-well production historical data, calculating the single-well oil jacket pressure difference, and judging whether the gas well accumulates liquid by using an oil jacket pressure difference method and gas production rate variation, wherein the judgment standard is as follows: when the gas well is put into operation, the gas production rate is large and stable, the pressure difference change of a wellhead oil sleeve is small, and the produced water of the gas well is mainly condensate water; after the gas well is put into operation for a period of time, the gas production rate is greatly reduced, the pressure difference of an oil sleeve is greatly increased, and the gas well is considered to be water breakthrough, so that the large-volume formation water of the gas well can cause the effusion and even the flooding of a shaft, the single-well productivity is seriously inhibited, when the effusion of the gas well is caused, the pressure difference of the oil sleeve is more than 4MPa, the effusion of the gas well is serious, and the pressure difference of the oil sleeve is less than 4MPa, the effusion; whether the gas well water production type is accurately judged is verified through whether the gas well accumulated liquid exists or not so as to correct the movable water distribution range
(2) And if the sand fracturing and acidizing construction operation is found through the single well production history, verifying whether the single well water production type judged by using the stratum water ion mineralization degree chart is accurate.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the prior art, the method adopts the specific technical scheme formed in the steps 1-6, can effectively solve the problems existing in the existing compact sandstone gas reservoir development, combines single-well production data, is simple and easy to operate, can quickly, efficiently and accurately identify the movable water distribution of the compact sandstone gas reservoir, and provides scientific basis and theoretical support for the subsequent gas reservoir development and the scheme establishment and adjustment.
2. And 6, overlapping the movable water area of the mineralization degree distribution contour map obtained in the step 4 and the single-well water production type distribution map obtained in the step 5, so that the description of the movable water distribution range of the compact sandstone is more accurate and reliable.
3. The combination of 2 contents included in the single well dynamic data in step 6 can ultimately improve the accuracy of the movable water range determination.
4. The method can produce great economic and social benefits in the aspects of cost reduction, efficiency improvement and the like, or has great influence on the technical field of fight advance reserve, and the effect can be converted and created within 2 to 3 years.
Drawings
The invention will be described in further detail with reference to the following description taken in conjunction with the accompanying drawings and detailed description, in which:
FIG. 1 is a schematic diagram illustrating a method for describing the distribution of mobile water in a tight sandstone gas reservoir;
FIG. 2 is a schematic diagram of static data details;
FIG. 3 is a diagram illustrating dynamic data details;
FIG. 4 is a schematic diagram of a water region delineated by mineralization degree;
FIG. 5 is a schematic diagram of a single well water production type delineating water zones;
FIG. 6 is a diagram illustrating a movable water distribution result according to an embodiment of the present invention.
Detailed Description
Example 1:
as a best mode of the invention, the method comprises the following steps:
step 1, collecting static data and dynamic data of a research block; the static data in step 1 includes: basic data a and single-well water chemistry analysis data b; the dynamic data includes: producing dynamic data c. The basic data a in the static data comprises: block position a1,Block area a2, block boundary coordinate a3, single well coordinate a4, well spacing a 5; the single well water chemistry analysis data b comprises: total mineralization of formation water b1, K++Na+Degree of mineralization b2, Cl—Degree of mineralization b3, Ca2+Degree of mineralization b4, SO4 2—Degree of mineralization b5, Mg2+Degree of mineralization b6, HCO3 —Degree of mineralization b 7; the c production parameters in the dynamic data include: production date c1, pressure c2, gas production c3, oil pressure c4 and casing pressure c 5.
Step 2, calculating the single-well control area according to the data collected in the step 1, and preliminarily dividing the single-well water production types into three types, namely working fluid, formation water and condensate water, by combining a research block gas reservoir water-based classification standard table; the main parameters for dividing the water-based classification standard table of the gas reservoir in the step 2 include chloride ion concentration and total mineralization of formation water, the chloride ion concentration of the working solution is greater than 10000mg/L, the total mineralization is 20-80 g/L, the chloride ion concentration of the condensate water is less than 10000mg/L, the total mineralization is less than 20g/L, the chloride ion concentration of the formation water is greater than 20000mg/L, the total mineralization is greater than 35g/L, and specific values of different blocks need to be corrected according to relevant data of the blocks.
Step 3, using the static data in the step 1 to make a stratum water ion mineralization degree chart of the single well and further judge the water production type of the single well; in the step 3, the ion mineralization degree chart of the formation water is a chart which selects various main ion mineralization degrees according to the chemical composition of the produced water and is drawn according to a certain proportion, so as to obtain water-based characteristic charts of different types; the ion mineralization parameters used include: k++Na+Degree of mineralization, Cl—Degree of mineralization, Ca2+Degree of mineralization, SO4 2—Degree of mineralization, Mg2+Degree of mineralization, HCO3 —And (4) the mineralization degree, namely the produced water of the gas outlet well can be successfully judged to be stratum water or condensate water and working fluid according to the shape difference of the drawn stratum water ion mineralization degree chart.
Step 4, making a mineralization distribution contour map of the block by using the total mineralization data of the single well obtained in the step 2 and combining block boundary data and well position coordinate data, and delineating a movable water range by referring to a gas reservoir water classification standard table; the mineralization degree distribution contour map in the step 4 is made by lithograph software, and the used data comprises block boundary coordinate data, single well position coordinate data and single well produced water total mineralization degree data; and referring to the classification standard of the total salinity of the formation water in the gas reservoir water-based classification standard table to be more than 35g/L, the block range of the salinity of the tight sandstone gas reservoir more than 35g/L can be defined, namely the distribution range of the movable water of the tight sandstone gas reservoir.
Step 5, making a block single-well water production type distribution map by using the water production type discrimination result of the single well in the step 3 and combining block boundary data and well position coordinate data, and defining a movable water range by combining a single-well control area; and 5, dividing the single-well stratum water discrimination result into a producing stratum water well, a producing condensate water well and a producing working fluid well, calculating the single-well control area by using the block basic data, and delineating the single-well control area of the producing stratum water well by using the corresponding well so as to finally obtain the movable water distribution range of the compact sandstone gas reservoir.
And 6, performing movable water area superposition on the mineralization degree distribution contour map obtained in the step 4 and the single-well water production type distribution map obtained in the step 5, and analyzing movable water distribution characteristics by combining single-well dynamic data.
The combined single-well dynamic data in the step 6 comprises the following 2 contents:
(1) according to the single-well production historical data, calculating the single-well oil jacket pressure difference, and judging whether the gas well accumulates liquid by using an oil jacket pressure difference method and gas production rate variation, wherein the judgment standard is as follows: when the gas well is put into operation, the gas production rate is large and stable, the pressure difference change of a wellhead oil sleeve is small, and the produced water of the gas well is mainly condensate water; after the gas well is put into operation for a period of time, the gas production rate is greatly reduced, the pressure difference of an oil sleeve is greatly increased, and the gas well is considered to be water breakthrough, so that the large-volume formation water of the gas well can cause the effusion and even the flooding of a shaft, the single-well productivity is seriously inhibited, when the effusion of the gas well is caused, the pressure difference of the oil sleeve is more than 4MPa, the effusion of the gas well is serious, and the pressure difference of the oil sleeve is less than 4MPa, the effusion; whether the gas well water production type is accurately judged is verified through whether the gas well accumulated liquid exists or not so as to correct the movable water distribution range
(2) According to the production history of the gas well, the possibility of producing working fluid of the gas well can be determined according to the production history of the gas well, and if the single-well production history shows that the single-well production working fluid has construction operations such as sand fracturing, acidification and the like, whether the single-well water production type judged by using the formation water ion mineralization degree chart is accurate is verified, and finally the accuracy of determining the movable water range is improved.
And finally, determining the range superposition in the step 6 through the two, so that the description of the movable water distribution range of the compact sandstone is more accurate and reliable.
Example 2: verification example
The description method of the movable water distribution of the tight sandstone gas reservoir as shown in the attached figure 1 is implemented for a certain block of a certain gas field in China, and comprises the following technical steps:
the first step, collecting static data and dynamic data of the research block:
obtaining the area position, area, boundary coordinates, single well coordinates, well spacing, total salinity of formation water, and K in the ion mineralization chart of formation water from the exploration data++Na+、Cl—、Ca2+、SO4 2-、Mg2+、HCO3 —Degree of mineralization of the plasma.
The oil pressure, casing pressure, gas production and pressure of each day can be obtained according to the daily production report.
Secondly, the water-based classification standard table of the block gas reservoir is shown in table 1, and the formation water types are primarily classified
TABLE 1
And thirdly, further distinguishing by using a stratum water ion mineralization chart, and determining the type of the single-well produced water as the condensate water, the working fluid or the stratum water by combining the single-well production dynamic data.
And fourthly, utilizing the obtained total mineralization data of the single well, referring to the table 2, combining the block boundary data and the well position coordinate data to make a distribution contour map of the mineralization of the block, referring to a gas reservoir water classification standard table, and delineating the movable water range as shown in the table 4.
TABLE 2
Fifthly, making a block single-well water production type distribution map by using the single-well water production type discrimination result and combining block boundary data and well position coordinate data, and defining a movable water range by combining a single-well control area, as shown in fig. 5;
and sixthly, overlapping the comprehensive mineralization degree delineating water area result and the single-well water production type delineating water area range to obtain the area and finally determine the movable water distribution.
The above description is only an illustrative collective embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (8)
1. A description method for movable water distribution of a tight sandstone gas reservoir is characterized by comprising the following steps:
step 1, collecting static data and dynamic data of a research block;
step 2, calculating the single-well control area according to the data collected in the step 1, and preliminarily dividing the single-well water production types into three types, namely working fluid, formation water and condensate water, by combining a research block gas reservoir water-based classification standard table;
step 3, using the static data in the step 1 to make a stratum water ion mineralization degree chart of the single well and further judge the water production type of the single well;
step 4, making a mineralization distribution contour map of the block by using the total mineralization data of the single well obtained in the step 2 and combining block boundary data and well position coordinate data, and delineating a movable water range by referring to a gas reservoir water classification standard table;
step 5, making a block single-well water production type distribution map by using the water production type discrimination result of the single well in the step 3 and combining block boundary data and well position coordinate data, and defining a movable water range by combining a single-well control area;
and 6, performing movable water area superposition on the mineralization degree distribution contour map obtained in the step 4 and the single-well water production type distribution map obtained in the step 5, and analyzing movable water distribution characteristics by combining single-well dynamic data.
2. The method for describing the movable water distribution of the tight sandstone gas reservoir according to claim 1, wherein the method comprises the following steps: the static data in step 1 includes: basic data a and single-well water chemistry analysis data b; the dynamic data includes: producing dynamic data c.
3. The method for describing the movable water distribution of the tight sandstone gas reservoir according to claim 2, wherein the method comprises the following steps: the basic data a in the static data comprises: block position a1, block area a2, block boundary coordinates a3, single well coordinates a4, well spacing a 5; the single well water chemistry analysis data b comprises: total mineralization of formation water b1, K++Na+Degree of mineralization b2, Cl—Degree of mineralization b3, Ca2+Degree of mineralization b4, SO4 2—Degree of mineralization b5, Mg2+Degree of mineralization b6, HCO3 —Degree of mineralization b 7; the c production parameters in the dynamic data include: production date c1, pressure c2, gas production c3, oil pressure c4 and casing pressure c 5.
4. The method for describing the movable water distribution of the tight sandstone gas reservoir according to claim 1, wherein the method comprises the following steps: the main parameters for dividing the water-based classification standard table of the gas reservoir in the step 2 include chloride ion concentration and total mineralization of formation water, the chloride ion concentration of the working solution is greater than 10000mg/L, the total mineralization is 20-80 g/L, the chloride ion concentration of the condensate water is less than 10000mg/L, the total mineralization is less than 20g/L, the chloride ion concentration of the formation water is greater than 20000mg/L, the total mineralization is greater than 35g/L, and specific values of different blocks need to be corrected according to relevant data of the blocks.
5. The tight sandstone gas reservoir movable water of claim 1A method for describing a distribution, comprising: in the step 3, a stratum water ion mineralization degree chart is a chart which is based on the chemical composition of produced water, and a plurality of main ion mineralization degrees are selected and plotted according to a set ratio of 1:1, so that water-based characteristic charts of different types are obtained; the ion mineralization parameters used include: k++Na+Degree of mineralization, Cl—Degree of mineralization, Ca2+Degree of mineralization, SO4 2—Degree of mineralization, Mg2+Degree of mineralization, HCO3 —And (4) the mineralization degree, namely the produced water of the gas outlet well can be successfully judged to be stratum water or condensate water and working fluid according to the shape difference of the drawn stratum water ion mineralization degree chart.
6. The method for describing the movable water distribution of the tight sandstone gas reservoir according to claim 1, wherein the method comprises the following steps: the mineralization degree distribution contour map in the step 4 is made by lithograph software, and the used data comprises block boundary coordinate data, single well position coordinate data and single well produced water total mineralization degree data; and referring to the classification standard of the total salinity of the formation water in the gas reservoir water-based classification standard table to be more than 35g/L, the block range of the salinity of the tight sandstone gas reservoir more than 35g/L can be defined, namely the distribution range of the movable water of the tight sandstone gas reservoir.
7. The method for describing the movable water distribution of the tight sandstone gas reservoir according to claim 1, wherein the method comprises the following steps: and 5, dividing the single-well stratum water discrimination result into a producing stratum water well, a producing condensate water well and a producing working fluid well, calculating the single-well control area by using the block basic data, and delineating the single-well control area of the producing stratum water well by using the corresponding well so as to finally obtain the movable water distribution range of the compact sandstone gas reservoir.
8. The method for describing the movable water distribution of the tight sandstone gas reservoir according to claim 1, wherein the method comprises the following steps: the combined single-well dynamic data in the step 6 comprises the following 2 contents:
(1) according to the single-well production historical data, calculating the single-well oil jacket pressure difference, and judging whether the gas well accumulates liquid by using an oil jacket pressure difference method and gas production rate variation, wherein the judgment standard is as follows: when the gas well is put into operation, the gas production rate is large and stable, the pressure difference change of a wellhead oil sleeve is small, and the produced water of the gas well is mainly condensate water; after the gas well is put into operation for a period of time, the gas production rate is greatly reduced, the pressure difference of an oil sleeve is greatly increased, and the gas well is considered to be water breakthrough, so that the large-volume formation water of the gas well can cause the effusion and even the flooding of a shaft, the single-well productivity is seriously inhibited, when the effusion of the gas well is caused, the pressure difference of the oil sleeve is more than 4MPa, the effusion of the gas well is serious, and the pressure difference of the oil sleeve is less than 4MPa, the effusion; whether the gas well water production type is accurately judged is verified through whether the gas well accumulated liquid exists or not so as to correct the movable water distribution range
(2) And if the sand fracturing and acidizing construction operation is found through the single well production history, verifying whether the single well water production type judged by using the stratum water ion mineralization degree chart is accurate.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4202180A1 (en) * | 2021-12-27 | 2023-06-28 | Chevron U.S.A. Inc. | Systems and methods for identifying type curve regions as a function of position in a region of interest |
| US12007518B2 (en) | 2021-12-27 | 2024-06-11 | Chevron U.S.A. Inc. | Systems and methods for identifying type curve regions as a function of position in a region of interest |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004104560A2 (en) * | 2003-05-21 | 2004-12-02 | Baker Hughes Incorporated | Formation-based interpretation of nmr data for carbonate reservoirs |
| US20110042073A1 (en) * | 2009-08-21 | 2011-02-24 | Fabienne Legendre | Gravity interpretation workflow in injection wells |
| WO2012065258A1 (en) * | 2010-11-18 | 2012-05-24 | Suncor Energy Inc. | Process for determining mobile water saturation in a reservoir formation |
| CN104965979A (en) * | 2015-06-16 | 2015-10-07 | 中国石油化工股份有限公司 | Tight sandstone effective reservoir identifying method |
| CN105221134A (en) * | 2015-10-19 | 2016-01-06 | 中国石油大学(北京) | A kind of Fractured Gas Wells returns the method for discrimination that discharge opeing and formation water are formed |
| WO2016115816A1 (en) * | 2015-01-23 | 2016-07-28 | 中国矿业大学 | Structural discrimination indexes of ordovician limestone top filling zones and determination method |
| CN106841551A (en) * | 2016-12-29 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of analysis method of identification stratum water and/or surface water water type |
| CN107237614A (en) * | 2017-08-04 | 2017-10-10 | 中国石油化工股份有限公司华北油气分公司 | A kind of method of aqueous tight gas reservoir gas well water pumping gas production |
| CN110163497A (en) * | 2019-05-15 | 2019-08-23 | 中石化石油工程技术服务有限公司 | Four gas reservoir fluid method of discrimination of thunder based on T2-T1 two dimension cross plot |
| WO2019233114A1 (en) * | 2018-06-08 | 2019-12-12 | 中国矿业大学 | Method for evaluating risk of water damage from strata water inrush of overlying strata in mining area |
| WO2020106446A2 (en) * | 2018-11-21 | 2020-05-28 | Baker Hughes, A Ge Company, Llc | Fluid substitution method for t2 distributions of reservoir rocks |
| CN111427095A (en) * | 2020-05-22 | 2020-07-17 | 中国石油天然气集团有限公司 | Method for identifying fluid property by applying nuclear magnetic resonance quadrilateral interpretation plate |
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004104560A2 (en) * | 2003-05-21 | 2004-12-02 | Baker Hughes Incorporated | Formation-based interpretation of nmr data for carbonate reservoirs |
| US20110042073A1 (en) * | 2009-08-21 | 2011-02-24 | Fabienne Legendre | Gravity interpretation workflow in injection wells |
| WO2012065258A1 (en) * | 2010-11-18 | 2012-05-24 | Suncor Energy Inc. | Process for determining mobile water saturation in a reservoir formation |
| WO2016115816A1 (en) * | 2015-01-23 | 2016-07-28 | 中国矿业大学 | Structural discrimination indexes of ordovician limestone top filling zones and determination method |
| CN104965979A (en) * | 2015-06-16 | 2015-10-07 | 中国石油化工股份有限公司 | Tight sandstone effective reservoir identifying method |
| CN105221134A (en) * | 2015-10-19 | 2016-01-06 | 中国石油大学(北京) | A kind of Fractured Gas Wells returns the method for discrimination that discharge opeing and formation water are formed |
| CN106841551A (en) * | 2016-12-29 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of analysis method of identification stratum water and/or surface water water type |
| CN107237614A (en) * | 2017-08-04 | 2017-10-10 | 中国石油化工股份有限公司华北油气分公司 | A kind of method of aqueous tight gas reservoir gas well water pumping gas production |
| WO2019233114A1 (en) * | 2018-06-08 | 2019-12-12 | 中国矿业大学 | Method for evaluating risk of water damage from strata water inrush of overlying strata in mining area |
| WO2020106446A2 (en) * | 2018-11-21 | 2020-05-28 | Baker Hughes, A Ge Company, Llc | Fluid substitution method for t2 distributions of reservoir rocks |
| CN110163497A (en) * | 2019-05-15 | 2019-08-23 | 中石化石油工程技术服务有限公司 | Four gas reservoir fluid method of discrimination of thunder based on T2-T1 two dimension cross plot |
| CN111427095A (en) * | 2020-05-22 | 2020-07-17 | 中国石油天然气集团有限公司 | Method for identifying fluid property by applying nuclear magnetic resonance quadrilateral interpretation plate |
Non-Patent Citations (4)
| Title |
|---|
| 代金友;王蕾蕾;李建霆;林健;尹松;: "苏里格西区气水分布特征及产水类型解析", 特种油气藏, no. 02, pages 69 - 72 * |
| 支鑫;熊伟;高树生;叶礼友;李奇;WANG QINGKUI;: "苏里格致密砂岩气藏可动水饱和度分布", 大庆石油地质与开发, vol. 34, no. 02, 1 April 2015 (2015-04-01), pages 86 - 89 * |
| 欧家强;王小蓉;袁权;阮基富;唐仕谷;李忻洪;: "安岳气田磨溪区块龙王庙组气藏产水类型识别", 天然气勘探与开发, no. 01, pages 58 - 62 * |
| 赵辉;欧阳诚;程绪彬;石新;韩;朱萌;: "苏5和桃7区块马家沟组泥晶、泥粉晶白云岩储层流体类型判别", 测井技术, no. 01, pages 119 - 123 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4202180A1 (en) * | 2021-12-27 | 2023-06-28 | Chevron U.S.A. Inc. | Systems and methods for identifying type curve regions as a function of position in a region of interest |
| US12007518B2 (en) | 2021-12-27 | 2024-06-11 | Chevron U.S.A. Inc. | Systems and methods for identifying type curve regions as a function of position in a region of interest |
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