CN110566169A - well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault - Google Patents
well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault Download PDFInfo
- Publication number
- CN110566169A CN110566169A CN201910885942.5A CN201910885942A CN110566169A CN 110566169 A CN110566169 A CN 110566169A CN 201910885942 A CN201910885942 A CN 201910885942A CN 110566169 A CN110566169 A CN 110566169A
- Authority
- CN
- China
- Prior art keywords
- well
- fault
- selecting
- oil production
- oil
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 77
- 239000012530 fluid Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 238000005457 optimization Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 43
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000011229 interlayer Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- 238000011161 development Methods 0.000 claims description 6
- 238000011835 investigation Methods 0.000 claims description 6
- 238000010187 selection method Methods 0.000 claims description 6
- 230000000704 physical effect Effects 0.000 claims description 5
- 230000005465 channeling Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 abstract description 5
- 235000009827 Prunus armeniaca Nutrition 0.000 description 12
- 244000018633 Prunus armeniaca Species 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- 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
- 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
-
- E—FIXED CONSTRUCTIONS
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a well selecting and layer selecting method for a return-flow measure after a large amount of flooding fluid is injected into an oil production well near a sandstone reservoir fault. The problem that an effective and reasonable well selecting and layer selecting method is lacked in a return-flow measure after a large amount of flooding fluid is injected into an oil production well near a fault of an existing sandstone reservoir is mainly solved. The method is characterized in that: the method comprises the following steps: (1) optimizing the target well; a, selecting a well with incomplete injection-production relation near a fault; b is preferably a well at a distance greater than 80m from the fault; c, ensuring that the underground condition, the ground condition and the like meet the construction requirements; d, preferably selecting an oil production well with certain oil production capacity, high storage capacity, low extraction degree and high residual recoverable storage capacity; (2) and (4) carrying out target layer optimization on the target well selected in the step (1). The method ensures the oil increasing effect after the measures and prolongs the effective period of the measures, ensures the smooth completion of the process by reasonably combining the layer sections, avoids the mutual interference between oil layers and plays a role in protecting the oil layers to a certain extent.
Description
Technical Field
The invention relates to the technical field of oil field development, in particular to a well selecting and layer selecting method for a return-flow measure after a large amount of flooding fluid is injected into an oil production well near a sandstone reservoir fault.
Background
the oil production well near the sandstone reservoir fault has the characteristics of incomplete injection-production relation and rich residual oil. Aiming at the potential wells, a new large-scale fracturing method is provided for the oil field, namely large-dose oil displacement liquid is injected from the oil production well and then returns to the oil production well. The method is characterized in that large-scale flooding fluid is continuously injected into a stratum from an oil well end, and energy is directly supplemented to an injection and production imperfect well point; the surfactant and alkali are added into the flooding fluid, the fracturing and crack-making are carried out, and the flooding fluid is subjected to filtration, so that the oil washing effect can be achieved when the flooding fluid enters a rock gap. The new fracturing mode can play the dual functions of huff and puff and oil displacement, the injected large amount of oil displacement liquid provides guarantee for energy supplement after measures, and the residual oil which is originally lack of the direction of a water injection well point can also obtain displacement energy, so that the potential excavation effect which cannot be achieved by conventional fracturing is achieved.
For an oil well near a fault, no formation energy is supplemented or the supplement direction is single after ordinary fracturing, so that the measure effect is poor. The new large-scale fracturing mode has the characteristics of large fracturing scale, large liquid volume, quick fluid loss of the flooding fluid and the like. If the distance between the well selection and the fault is not restricted, the flooding fluid is easy to enter the fault, and the consequence is serious; if the reserves and the historical production parameters of the oil well are not restricted, the effect of measures cannot be guaranteed; if the well and the thickness of the interlayer are not strictly restricted, oil layer pollution is easily caused.
In order to ensure the effect of measures, ensure the construction safety, protect an oil layer from being polluted and damaged and the like, a new well selecting and layer selecting method for return-flow measures after a large amount of flooding fluid is injected into an oil production well near a sandstone reservoir fault is urgently needed.
Disclosure of Invention
the invention provides a well selecting and stratifying method for returning and spitting measures after injecting a large amount of flooding fluid for a production well near a sandstone reservoir fault, aiming at overcoming the problem that the existing well selecting and stratifying method for returning and spitting measures after injecting a large amount of flooding fluid for the production well near the sandstone reservoir fault is lack of an effective and reasonable well selecting and stratifying method in the background technology. The well selecting and layer selecting method for returning and spitting measures after injecting a large amount of flooding fluid into the oil production well near the sandstone oil reservoir fault ensures the oil increasing effect after the measures and prolongs the effective period of the measures, ensures the smooth completion of the process by reasonably combining the intervals, avoids mutual interference among oil layers, and plays a role in protecting the oil layers to a certain extent.
The invention can solve the problems by the following technical scheme: a well selecting and layer selecting method for return-flow measures after injecting a large amount of flooding fluid into an oil production well near a sandstone reservoir fault comprises the following steps:
(1) make optimization for target well
a, selecting a production well with incomplete injection and production relation near a fault;
b preferably selecting wells in the step (a) with a distance greater than 80m from the fault;
c, ensuring that the underground condition and the ground condition of the preselected well in the step (b) meet the construction requirements;
d, preferably selecting the oil production well with a certain oil production capacity, high storage capacity, low extraction degree and high residual recoverable storage capacity from the pre-selected well in the step (c);
e preferably pre-selecting wells from the initial period of production to the current productive date in step (d);
f, preferably selecting a target well with large thickness and low current production level in the pre-selected well in the step (e);
(2) Carrying out target layer optimization on the target well selected in the step (1):
g. Small layers with poor physical properties, low sand body utilization degree and low water content are preferred;
h. Preferably selecting small layers with small daily liquid production, low formation pressure and high residual geological reserve;
k. and (d) combining the intervals of the small layers optimized in the steps (g) and (h), and ensuring that the thicknesses of the upper interlayer and the lower interlayer of the combined intervals are both larger than 2 m.
the technological principle of the measure is different from that of conventional fracturing, and the fracturing fluid with fluid loss resistance is not needed, and the fracture is firstly made, then sand is added, and then the sand is drained back. The flooding fluid is used as fracturing fluid, a crack which is longer than a conventional fracture is formed in a stratum, a high-speed channel is provided for the flooding fluid, the flooding fluid is quickly sent to the deep part of a reservoir layer through the crack, the oil is lost by up and down filtration along the process of fracturing and fracture forming, the flooding fluid is quickly filled into pores, and the radial driving of injecting the pores into a vertical well is converted into the area driving of injecting the fractures into the fracturing. According to the process principle and the different fracturing scales, the following can be obtained: the existing well selection and stratum selection methods of the conventional fracturing are not suitable for the new large-scale fracturing mode.
Compared with the background technology, the invention has the following beneficial effects: the well selecting and layer selecting method for the return-flow measure after the injection of the large-dose flooding fluid into the oil production well near the sandstone reservoir fault solves the problem that a new large-scale fracturing mode does not have a reasonable and effective well selecting and layer selecting method. The method has the characteristics of large scale, large liquid volume, quick fluid loss of the flooding fluid, long construction time and the like, and by means of the method, the safety and the smooth implementation of each step in the construction process are guaranteed through strict risk control in geological design; by carrying out condition constraint on factors such as reserves, extraction degree, residual recoverable reserves, thickness, production level and the like, the oil increasing effect after measures is ensured and the effective period of the measures is prolonged; through reasonably combining the layer sections, the smooth completion of the process is ensured, the mutual interference among oil layers is avoided, and the effect of protecting the oil layers is achieved to a certain extent.
At present, a well with a large amount of flooding fluid injected into a production well near a fault of 269 sandstone reservoir and then return-flowing measures is preferably selected by the method, wherein 56 wells are constructed. After the measures, the average daily increase effect reaches 5.2t, and the validity period is more than one year.
Description of the drawings:
FIG. 1 is a well pattern of wells 13-D3-45 of example 1 of the invention;
FIG. 2 is a pre-treatment production curve for wells of apricot 13-D3-45 in example 1 of the present invention;
FIG. 3 is a production development curve after the apricot 13-D3-45 well measures in example 1 of the invention.
the specific implementation mode is as follows:
The invention will be further described with reference to the following drawings and specific embodiments:
The well selecting and layer selecting method for return-flow measures after injecting a large amount of flooding fluid into the oil production well near the sandstone reservoir fault comprises the following steps:
(1) Make optimization for target well
The oil production well with imperfect injection and production relation near the fault is preferred. The well group is close to the fault and lacks of the water injection direction, so that the injection-production relation is incomplete, and the well group development effect is poor;
② the well with a distance of more than 80m from the fault is preferred. In order to ensure that the flooding fluid does not flow into the fault, the distance from the oil production well to the fault is required to be the sum of the maximum length and the safety distance of the measure crack formation during well selection. The dosage range of the flooding fluid is 8000-1000 m3, the filtration property (high filtration property), the construction displacement (large displacement) and the properties of stratum sand bodies, lithology and physical properties of the flooding fluid are considered, the safety distance of the measures of the sandstone oil reservoir is 5m, the maximum length of cracks is 75m, and the distance fault of the oil production well is more than 80 m.
And thirdly, ensuring that the underground condition, the ground condition and the like meet the construction requirements. Due to the characteristics of large scale, large liquid amount, quick fluid loss of the flooding fluid and the like, compared with the common fracturing, the well condition investigation requirement is more strict. The downhole condition survey includes: the method comprises the following steps of operation lead-making investigation, 40-arm hole diameter test, electromagnetic flaw detection, comprehensive evaluation of well cementation quality logging, pulse neutron full-scale logging and the like. The ground condition survey comprises the following steps: well site roads; the specific requirements of underground condition and ground condition investigation are as follows: the well site road can enter the vehicle for construction, the well cementation quality is good, the casing pipe has no casing damage, no reinforcement and no channeling, and no falling object is left in the well;
selecting oil production wells with certain oil production capacity, high storage capacity, low extraction degree and high residual recoverable storage capacity; the required storage is lower than the average storage of the blocks, the extraction degree is lower than the average extraction degree of the blocks, and the residual recoverable storage is larger than the average residual recoverable storage of the blocks;
Selecting the well with the date of high yield from the initial production period of the pre-selected well;
Sixthly, selecting a well with large thickness and low current production level; the thickness of the constructable small-layer accumulated sandstone is required to be larger than the average sandstone thickness of the block, the effective thickness is larger than the average effective thickness of the block, and the daily fluid production is smaller than the average daily fluid production of the block;
(2) preference is given to the layer of interest
Selecting small layers with poor physical properties, low sand body utilization degree and low water content;
selecting small layers with small daily liquid production amount, low formation pressure and high residual geological reserve;
thirdly, combining the layer sections of the preferred layer; the thicknesses of the upper interlayer and the lower interlayer of the combined layer section are both ensured to be larger than 2 m.
Example 1
The invention is further explained by combining 13-D3-45 wells of apricot trees and oil fields of Daqing oil fields.
(1) Make optimization for target well
The apricot 13-D3-45 well is a primary oil production well in the transition zone of apricot thirteen zones. FIG. 1 is a well diagram of the apricot 13-D3-45 well. The well is positioned at the edge of the fault, the well is communicated with 3 water wells for unilateral water injection, and is lack of a water injection well communicated with an oil production well near the fault, so that the well group development effect is poor. The well is located 153m from the fault, greater than the required safety distance of 80 m. The well site has a road, and the vehicle can be put in and out. The oil interval cementing quality is excellent. The casing pipe has good technical condition, no reinforcement, no casing damage, no channeling and no falling object in the well.
the average ejection sandstone thickness of the block of the well is 13.5m, and the average ejection effective thickness is 3.8 m. The average production degree is 42 percent, the average residual recoverable storage amount is 12045.69t, and the average daily oil production is 1.1 t.
The thickness of the sandstone is 14.7m and the effective thickness of the sandstone is 4.4m in the apricot 13-T3-45 well full well. The extraction degree is 39.88 percent, which is lower than the average level of the whole area, the residual oil is enriched, and the residual recoverable reserve 30892t is higher than the average level of the whole area.
FIG. 2 is a production curve before the apricot 13-D3-45 well measures, and as can be seen from the curve developed in FIG. 2, the daily liquid production amount before the measures is 6.7t, and the daily oil production amount is 0.8t, which are lower than the average level of the blocks. The daily oil yield is 4.7t at the initial period of the production, and the curve shows a high value.
(2) Preference is given to the layer of interest
11 deposition units are shot from 13-T3-45 wells of apricot, and the geological reserves of each layer are shown in table 1, so that the sand utilization degree and the water content of each small layer are low; the daily liquid yield is small and the formation pressure is low.
(3) according to the interval combination standard that the thickness of an interlayer is more than 2m, the use conditions are similar, the physical properties of an oil layer are similar and the like, the apricot 13-butyl well 3-45 is divided into 5 intervals.
a first stage: SII 2-SII 91The thickness of the lower interlayer is 64.0 m; and a second stage: pi 112～P Ⅰ113the thickness of the upper interlayer is 64.0m, and the thickness of the lower interlayer is 3.2 m; a third stage: pi 122～P Ⅰ123the thickness of the upper interlayer is 3.2m, and the thickness of the lower interlayer is 4.1 m; a fourth stage: pi 21a0～P Ⅰ222the thickness of the upper interlayer is 4.1m, and the thickness of the lower interlayer is 12.5 m; a fifth stage: pi 322the thickness of the upper interlayer is 12.5 m.
apricot 13-Ding 3-45 well in 2017 and 9 months, pressure flooding measures are implemented. FIG. 3 is a production development curve after apricot 13-D3-45 well measures, and it can be seen from FIG. 3 that the maximum value of the daily oil production reaches 96.2t and the maximum value of the daily oil production reaches 6.8t after the pressure flooding. At present, the average daily oil increment is 3.5t, the effective period is still in the present, the cumulative effective period is 426 days, the cumulative oil increment is 1491t, and the economic benefit is increased by 1.13 ten thousand yuan.
TABLE 1
At present, a well with a large amount of flooding fluid injected into a production well near a fault of 269 sandstone reservoir and then return-flowing measures is preferably selected by the method, wherein 56 wells are constructed. After the measures, the average daily oil increasing effect reaches 5.2t, and the validity period is more than one year.
Claims (7)
1. A well selecting and layer selecting method for return-flow measures after injecting a large amount of flooding fluid into an oil production well near a sandstone reservoir fault comprises the following steps:
(1) Make optimization for target well
a, selecting a production well with incomplete injection and production relation near a fault;
b preferably selecting wells in the step (a) with a distance greater than 80m from the fault;
c, ensuring that the underground condition and the ground condition of the preselected well in the step (b) meet the construction requirements;
d, preferably selecting the oil production well with a certain oil production capacity, high storage capacity, low extraction degree and high residual recoverable storage capacity from the pre-selected well in the step (c);
e preferably pre-selecting wells from the initial period of production to the current productive date in step (d);
f preferably pre-selecting a well of large thickness and low current production level in step (e);
(2) carrying out target layer optimization on the target well selected in the step (1):
g. Small layers with poor physical properties, low sand body utilization degree and low water content are preferred;
h. preferably selecting small layers with small daily liquid production, low formation pressure and high residual geological reserve;
k. and (d) combining the intervals of the small layers optimized in the steps (g) and (h), and ensuring that the thicknesses of the upper interlayer and the lower interlayer of the combined intervals are both larger than 2 m.
2. The well selection and layer selection method for the return-flow measure after the injection of the large-dose flooding fluid into the oil production well near the sandstone reservoir fault is characterized by comprising the following steps of: in the step (1 a), the oil production well with the incomplete injection-production relationship near the fault is preferably a well with the incomplete injection-production relationship and poor well group development effect due to the fact that the well group is close to the fault and lacks of the water injection direction.
3. The sandstone reservoir fault nearby oil production well injection of claim 1the well selecting and layer selecting method of the large ~ dose flooding fluid back ~ spitting measure is characterized in that in the step (1 b), a well with the distance more than 80m from the fault is preferred, in order to ensure that the flooding fluid does not flow into the fault, the sum of the maximum length and the safety distance of the measure seam formation from the oil production well to the fault is required during well selection, and the dosage range of the flooding fluid of the measure is 8000 ~ 1000m3The safety distance of measures for the sandstone oil reservoir is 5m, the maximum length of the crack is 75m, and the distance between the oil production well and the fault is more than 80 m.
4. the well selection and layer selection method for the return-flow measure after the injection of the large-dose flooding fluid into the oil production well near the sandstone reservoir fault is characterized by comprising the following steps of: the step (1 c) of downhole condition investigation comprises: performing operation lead model drilling investigation, 40-arm hole diameter test, electromagnetic flaw detection, well cementation quality comprehensive evaluation well logging and pulse neutron full-common well logging; the ground condition survey comprises the following steps: and (4) well site roads.
5. The well selection and layer selection method for the return-flow measure after the injection of the large-dose flooding fluid into the oil production well near the sandstone oil reservoir fault is characterized by comprising the following steps of: the specific requirements of underground condition and ground condition investigation are as follows: the well site road can enter the vehicle for construction, the well cementation quality is good, the casing pipe has no casing damage, no reinforcement, no channeling and no falling object in the well.
6. The well selection and layer selection method for the return-flow measure after the injection of the large-dose flooding fluid into the oil production well near the sandstone reservoir fault is characterized by comprising the following steps of: in the step (1 d), the required storage capacity is lower than the average storage capacity of the blocks, the extraction degree is smaller than the average extraction degree of the blocks, and the residual recoverable storage capacity is larger than the average residual recoverable storage capacity of the blocks.
7. The well selection and layer selection method for the return-flow measure after the injection of the large-dose flooding fluid into the oil production well near the sandstone reservoir fault is characterized by comprising the following steps of: and (3) requiring that the thickness of the constructable small-layer accumulated sandstone is larger than the average sandstone thickness of the block, the effective thickness is larger than the average effective thickness of the block, and the daily fluid production is smaller than the average daily fluid production of the block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885942.5A CN110566169A (en) | 2019-09-19 | 2019-09-19 | well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885942.5A CN110566169A (en) | 2019-09-19 | 2019-09-19 | well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566169A true CN110566169A (en) | 2019-12-13 |
Family
ID=68781132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910885942.5A Pending CN110566169A (en) | 2019-09-19 | 2019-09-19 | well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565481A (en) * | 2020-04-28 | 2021-10-29 | 中国石油化工股份有限公司 | Method for exploiting reservoir bodies in fractured zone |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912338A (en) * | 2006-08-29 | 2007-02-14 | 大庆油田有限责任公司 | Period injection-production method of waterflooding sandstone oil field |
| CN101013161A (en) * | 2007-01-15 | 2007-08-08 | 中国石油大港油田勘探开发研究院 | Seismic exploration position calibration method based on prestack wave field simulation |
| CN109184656A (en) * | 2018-09-05 | 2019-01-11 | 大庆油田有限责任公司 | One kind, which adopting no note type and isolates well point, taps the latent power and proposes efficacious prescriptions method |
| CN109594959A (en) * | 2018-10-31 | 2019-04-09 | 东北石油大学 | A kind of pressure break flooding method improving old filed thin and poor layer harvesting business efficiency |
| US20190226317A1 (en) * | 2015-03-04 | 2019-07-25 | Stewart & Stevenson, LLC | Well fracturing systems with electrical motors and methods of use |
-
2019
- 2019-09-19 CN CN201910885942.5A patent/CN110566169A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912338A (en) * | 2006-08-29 | 2007-02-14 | 大庆油田有限责任公司 | Period injection-production method of waterflooding sandstone oil field |
| CN101013161A (en) * | 2007-01-15 | 2007-08-08 | 中国石油大港油田勘探开发研究院 | Seismic exploration position calibration method based on prestack wave field simulation |
| US20190226317A1 (en) * | 2015-03-04 | 2019-07-25 | Stewart & Stevenson, LLC | Well fracturing systems with electrical motors and methods of use |
| CN109184656A (en) * | 2018-09-05 | 2019-01-11 | 大庆油田有限责任公司 | One kind, which adopting no note type and isolates well point, taps the latent power and proposes efficacious prescriptions method |
| CN109594959A (en) * | 2018-10-31 | 2019-04-09 | 东北石油大学 | A kind of pressure break flooding method improving old filed thin and poor layer harvesting business efficiency |
Non-Patent Citations (3)
| Title |
|---|
| 林发枝 等: "《压裂驱油新工艺在三类油层上的应用》", 《化学工程与装备》 * |
| 王洪卫 等: "《三类油层压裂驱油技术设计及效果研究》", 《数学的实践与认识》 * |
| 马洪芬: "《对断层附近油井水力压裂措施的认识》", 《钻采工艺》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565481A (en) * | 2020-04-28 | 2021-10-29 | 中国石油化工股份有限公司 | Method for exploiting reservoir bodies in fractured zone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Qun et al. | The “fracture-controlled reserves” based stimulation technology for unconventional oil and gas reservoirs | |
| CN103046910B (en) | Ultra-high water cut stage reservoir water drive development approach | |
| CN110397428B (en) | Displacement coalbed methane yield increasing method for coalbed methane jointly mined by vertical well and U-shaped butt well | |
| CN111191849B (en) | Method for predicting water inflow of deep-buried working face in western mining area | |
| CN110295901A (en) | A kind of mining using leaching technology method and system | |
| CN102146788A (en) | Method for enhancing recovery ratio through three-dimensional streamline regulation of water drive reservoir | |
| CN104141481A (en) | Well spacing method of ultralow-permeability tight-oil reservoir horizontal well | |
| CN107630686B (en) | compact oil energy supplementing method for staggered displacement and imbibition displacement between horizontal well sections | |
| RU2382183C1 (en) | Multi zone oil reservoir at late stage with unstable cover formation and non-homogeneous collector development method | |
| CN110259421B (en) | Fractured compact oil reservoir water injection energy supplementing method | |
| CN105317407B (en) | A kind of development approach of ultra-high water cut stage Untabulated reservoirs | |
| Jing et al. | Synchronous injection-production energy replenishment for a horizontal well in an ultra-low permeability sandstone reservoir: A case study of Changqing oilfield in Ordos Basin, NW China | |
| CN105672978A (en) | Horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method | |
| PL237727B1 (en) | Indexes of structural differentiation of upper zones of Ordovician limestone filling and method to determine it | |
| CN103161434A (en) | Mining method for low permeability reservoir of shale gas and the like | |
| CN104633996A (en) | Water source heat pump recharging technical method | |
| CN105822284A (en) | Well pattern spacing method of triangular horizontal well | |
| CN104405349A (en) | Method for improving water-flooding development effect of bottom water reservoir by utilizing multistage high-pressure water jet | |
| CN103628848B (en) | Multidirectional interlayer displacement in flooding oil production method and system | |
| CN110566169A (en) | well selecting and layer selecting method for return-flow measure after injecting large-dose flooding fluid into oil production well near sandstone reservoir fault | |
| CN105041274A (en) | Short-range two-layer oil-gas reservoir commingled production technique | |
| CN103628914A (en) | Low-permeability thick-layer bedrock aquifer exploring and draining method for low-angle coal seam slicing mining | |
| RU2580562C1 (en) | Method of developing oil deposits | |
| RU2513962C1 (en) | Oil deposit development method | |
| RU2526037C1 (en) | Development of fractured reservoirs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211229 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Applicant after: Daqing Oilfield Co.,Ltd. Applicant after: PETROCHINA Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Applicant before: Daqing Oilfield Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
|
| RJ01 | Rejection of invention patent application after publication |