CN103982169A - Polybasic jelly acid sand carrying seam-adjustable acid fracturing method - Google Patents
Polybasic jelly acid sand carrying seam-adjustable acid fracturing method Download PDFInfo
- Publication number
- CN103982169A CN103982169A CN201410177405.2A CN201410177405A CN103982169A CN 103982169 A CN103982169 A CN 103982169A CN 201410177405 A CN201410177405 A CN 201410177405A CN 103982169 A CN103982169 A CN 103982169A
- Authority
- CN
- China
- Prior art keywords
- acid
- liquid nitrogen
- sides
- sand
- frozen glue
- 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.)
- Granted
Links
Abstract
The invention discloses a polybasic jelly acid sand carrying seam-adjustable acid fracturing method, which comprises the following steps that firstly, polybasic acid and lead acid are prepared, then, seam controlling agents and the lead acid are simultaneously filled into an oil-gas well target layer; next, the polybasic acid, liquid nitrogen and cross linking agents are simultaneously filled; next, liquid nitrogen is filled; then, the liquid nitrogen, the polybasic acid, the cross linking agent and ceramsite sand are simultaneously filled; finally, all liquid filled into a well opening is discharged into a liquid discharge pool. The method provided by the invention has the advantages that the polybasic acid is used for manufacturing long seams, the cross linking agents and the sand are used for maintaining the seam length, the liquid nitrogen is used for supplementing the stratum energy, the polybasic acid, the cross linking agent and the liquid nitrogen are filled into the stratum in a segmented plugging mode, the crack length and micro-crack connecting cavity is improved, the fast liquid discharge is realized, and finally, the long-time maintenance of the crack is reached.
Description
Technical field
The invention belongs to oil-gas mining technical field, relate to a kind of polynary frozen glue acid and take the high acidifying fracturing process of sand adjustable slit.
Background technology
The well stimulation of carbonate reservoir acid fracturing, it controls acid fracturing chief factors of success three: the one, the effective length in final acid fracturing crack; The 2nd, link up the ability of microcrack; The 3rd, the flow conductivity of acid-etched fracture after acid fracturing.Effective crack length is the impact that is subject to acid liquid loss, sour rock reaction speed and flow velocity, the acid solution type etc. of acid in seam.Linking up microcrack is the effective means that improves gas testing output, and in ensureing fracture length, the communication capability that improves microcrack is most important.The flow conductivity of acid-etched fracture is subject to the impact of acid etching kenel, the absolute meltage of acid on rock etc. of closure, the dissolving power of acid, the reaction of sour rock.Therefore carbonate reservoir acid fracturing transform raising acidizing effect as, and three main targets of pursuit are exactly acid-etched fracture length, microcrack communication capability and the higher acid corrosion fracture of growing, and can keep for a long time thereby reach crack.
Summary of the invention
The object of this invention is to provide a kind of polynary frozen glue acid and take the high acidifying fracturing process of sand adjustable slit, reach the effect that crack keeps for a long time.
The technical solution adopted in the present invention is that the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid, comprises the following steps:
Step 1: prepare polyacid
According to mass percent, take following raw material: hydrochloric acid: 65%-80%, formic acid: 8%-12%, acidification corrosion inhibitor: 1%-2%, thickening agent: 0.4%-0.8%, ferrous stability: 1%-2%, cleanup additive: 0.2%-0.4%, clear water: 2.8%-24.4%, the mass percent sum of each component is 100% above, in above ratio, raw material is added in the first sour tank, then mixes by pump truck, obtain polyacid;
Step 2: prepare preposition acid
According to mass percent, take following raw material: hydrochloric acid: 55%-70%, acidification corrosion inhibitor: 1%-2%, ferrous stability: 1%-2%, cleanup additive: 0.2%-0.4%, clear water: 25.6%-42.8%, the mass percent sum of each component is 100% above, in above ratio, raw material is added in the second sour tank, then mixes by pump truck, obtain preposition acid;
Step 3: implement acid fracturing:
First simultaneously inject 20 side-50 sides' control seam agent and the preposition acid that 10 side-30 measured step rapid 2 are made to Oil/gas Well target zone; Then inject polyacid, 5 side-20 sides' liquid nitrogen and 1 side-4 side's crosslinking agent that 100 side-400 measured step rapid 1 are made simultaneously; Then 5 side-10 sides' liquid nitrogen reinjects; Then inject 5 side-10 sides' liquid nitrogen, polyacid, 0.5 side-2 side's crosslinking agent and 4 side-16 sides' the ceramsite sand that 50 side-200 measured step rapid 1 are made simultaneously; After 1-8 hour, all liq that injects well head is discharged to clean-up pit, complete acid fracturing.
Feature of the present invention is also,
In step 3, when in the end discharge opeing, utilize 5 side-15 side's liquid nitrogen and 3-10 root bubble rod row going back the thoroughly row of returning of perforated interval.
Hydrochloric acid is that mass concentration is 31% technical hydrochloric acid.
Formic acid is that mass concentration is not less than 85% formic acid.
The invention has the beneficial effects as follows: the acid-etched fracture of the multiple-limb in regulating seam high, polyacid being formed to acid fracturing combines with the ceramsite sand crack of the higher flow conductivity that adds sand formation, has reached the effect that crack keeps for a long time.
Brief description of the drawings
Fig. 1 is that the process of implementing acid fracturing in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, comprises the following steps:
Step 1: prepare polyacid
According to mass percent, take following raw material: hydrochloric acid: 65%-80%, formic acid: 8%-12%, acidification corrosion inhibitor: 1%-2%, thickening agent: 0.4%-0.8%, ferrous stability: 1%-2%, cleanup additive: 0.2%-0.4%, clear water: 2.8%-24.4%, the mass percent sum of each component is 100% above, in above ratio, raw material is added in the first sour tank, then mixes by pump truck, obtain polyacid;
Step 2: prepare preposition acid
According to mass percent, take following raw material: hydrochloric acid: 55%-70%, acidification corrosion inhibitor: 1%-2%, ferrous stability: 1%-2%, cleanup additive: 0.2%-0.4%, clear water: 25.6%-42.8%, the mass percent sum of each component is 100% above, in above ratio, raw material is added in the second sour tank, then mixes by pump truck, obtain preposition acid;
Step 3: implement acid fracturing, as shown in Figure 1:
First simultaneously inject 20 side-50 sides' control seam agent and the preposition acid that 10 side-30 measured step rapid 2 are made to Oil/gas Well target zone; Then inject polyacid, 5 side-20 sides' liquid nitrogen and 1 side-4 side's crosslinking agent that 100 side-400 measured step rapid 1 are made simultaneously; Then 5 side-10 sides' liquid nitrogen reinjects; Then inject 5 side-10 sides' liquid nitrogen, polyacid, 0.5 side-2 side's crosslinking agent and 4 side-16 sides' the ceramsite sand that 50 side-200 measured step rapid 1 are made simultaneously; After 1-8 hour, all liq that injects well head is discharged to clean-up pit, complete acid fracturing.
In step 3, when in the end discharge opeing, utilize 5 side-15 side's liquid nitrogen and 3-10 root bubble rod row going back the thoroughly row of returning of perforated interval.
Hydrochloric acid described in step 1,2 is that mass concentration is 31% technical hydrochloric acid.
Formic acid described in step 1 is that mass concentration is not less than 85% formic acid.
Wherein, the CHS-5 acidification high temperature inhibiter of acidification corrosion inhibitor for being provided by Chengdu Jian Xiang Shu Guan Science and Technology Ltd.;
The CDC-10 frozen glue acid thickening agent of thickening agent for being provided by Chengdu Jian Xiang Shu Guan Science and Technology Ltd.;
The TWJ acidifying ferrous stability of ferrous stability for being provided by Chengdu Jian Xiang Shu Guan Science and Technology Ltd.;
The SZJ-3 acid fracturing cleanup additive of cleanup additive for being provided by Chengdu Jian Xiang Shu Guan Science and Technology Ltd.;
The FRK-KFJ fracture acidizing control seam agent of control seam agent for being provided by Beijing FRAC Technology Development Co., Ltd.;
The CDS-10 frozen glue acid crosslinking agent of crosslinking agent for being provided by Chengdu Jian Xiang Shu Guan Science and Technology Ltd.;
The high-strength ceramsite sand petroleum fracturing propping agent that ceramsite sand is the 69MPa that provided by Shanxi Feng Shuo petroleum fracturing propping agent Co., Ltd.
Impact below by each factor of experimental analysis on the inventive method:
(1) polynary frozen glue acid rheological characteristic
Polyacid and the crosslinking agent placed 120 hours are cross-linked in agitator, obtain polynary frozen glue acid, polynary frozen glue acid is sheared 60 minutes, the viscosity that records polynary frozen glue acid is as shown in table 1, can find out, 60 minutes time, the viscosity of polynary frozen glue acid is 119.35mPas, can meet site operation requirement (site operation requires: viscosity is not less than 100mPas).
The viscosity of 60 minutes is sheared in many yuan of frozen glue acid of table 1
| Time (min) | Viscosity (mPas) |
| 0 | 475 |
| 5 | 300 |
| 10 | 260 |
| 15 | 240 |
| 20 | 200 |
| 30 | 200 |
| 40 | 140 |
| 50 | 130 |
| 55 | 125 |
| 60 | 119.35 |
(2) the polynary frozen glue acidleach property lost
The evaluation of polynary frozen glue acid filtration property adopts identical rock core to contrast the static filtration of different acid, contrast is found, the filter loss of conventional common acids is much larger than viscous acid and polynary frozen glue acid, and rock core to the leak-off of polynary frozen glue acid little, as shown in table 2 more than viscous acid and common acids.
Comprehensive above-mentioned result of the test, polynary frozen glue acid has the following advantages:
(1) polynary frozen glue acid has low filtration property.
(2) utilize polynary frozen glue acid to take sand acid fracturing, high-viscous liquid is taken to sand frac-pack to combine with the acid fluid system acidization of breaking after glue under strata pressure and formation temperature, finally to realize the compound crack of the acid etching of high flow conductivity-support, expand oil and gas flow passage, reach the effect that crack keeps for a long time.
Embodiment mono-
The polyacid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 70% that mass concentration is 31%, mass concentration is 85% formic acid 10%, CHS-5 acidification high temperature inhibiter 1.5%, CDC-10 frozen glue acid thickening agent 0.6%, TWJ acidifying ferrous stability 1.5%, SZJ-3 acid fracturing cleanup additive 0.3%, clear water 16.1%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the first sour tank, then mixes by pump truck;
The preposition acid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 65% that mass concentration is 31%, CHS-5 acidification high temperature inhibiter 1.5%, TWJ acidifying ferrous stability 1.5%, SZJ-3 acid fracturing cleanup additive 0.3%, clear water 31.7%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the second sour tank, then mixes by pump truck;
Implement acid fracturing:
First simultaneously inject 35 sides' FRK-KFJ fracture acidizing control seam agent and the preposition acid that 20 sides prepare to Oil/gas Well target zone; Then inject polyacid, 15 sides' liquid nitrogen and 2 sides' CDS-10 frozen glue acid crosslinking agent that 200 sides prepare simultaneously; Then 8 sides' liquid nitrogen reinjects; Then inject 8 sides' liquid nitrogen, the high-strength ceramsite sand petroleum fracturing propping agent of polyacid, 1.2 sides' CDS-10 frozen glue acid crosslinking agent and 10 sides' 69MPa that 120 sides prepare simultaneously; After 2 hours, all liq that injects well head is discharged to clean-up pit, when discharge opeing is weak, utilizes 10 side's liquid nitrogen and 6 bubble rod rows going back the thoroughly row of returning of perforated interval.
Embodiment bis-
The polyacid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 67% that mass concentration is 31%, mass concentration is 85% formic acid 9%, CHS-5 acidification high temperature inhibiter 1.25%, CDC-10 frozen glue acid thickening agent 0.5%, TWJ acidifying ferrous stability 1.25%, SZJ-3 acid fracturing cleanup additive 0.25%, clear water 20.75%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the first sour tank, then mixes by pump truck;
The preposition acid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 60% that mass concentration is 31%, CHS-5 acidification high temperature inhibiter 1.25%, TWJ acidifying ferrous stability 1.25%, SZJ-3 acid fracturing cleanup additive 0.25%, clear water 37.25%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the second sour tank, then mixes by pump truck;
Implement acid fracturing:
First simultaneously inject 25 sides' FRK-KFJ fracture acidizing control seam agent and the preposition acid that 15 sides prepare to Oil/gas Well target zone; Then inject polyacid, 10 sides' liquid nitrogen and 1.5 sides' CDS-10 frozen glue acid crosslinking agent that 150 sides prepare simultaneously; Then 7 sides' liquid nitrogen reinjects; Then inject 7 sides' liquid nitrogen, the high-strength ceramsite sand petroleum fracturing propping agent of polyacid, 0.8 side's CDS-10 frozen glue acid crosslinking agent and 7 sides' 69MPa that 80 sides prepare simultaneously; After 4 hours, all liq that injects well head is discharged to clean-up pit, when discharge opeing is weak, utilizes 8 side's liquid nitrogen and 4 bubble rod rows going back the thoroughly row of returning of perforated interval.
Embodiment tri-
The polyacid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 72% that mass concentration is 31%, mass concentration is 85% formic acid 11%, CHS-5 acidification high temperature inhibiter 1.75%, CDC-10 frozen glue acid thickening agent 0.7%, TWJ acidifying ferrous stability 1.75%, SZJ-3 acid fracturing cleanup additive 0.35%, clear water 12.45%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the first sour tank, then mixes by pump truck;
The preposition acid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 67% that mass concentration is 31%, CHS-5 acidification high temperature inhibiter 1.75%, TWJ acidifying ferrous stability 1.75%, SZJ-3 acid fracturing cleanup additive 0.35%, clear water 29.15%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the second sour tank, then mixes by pump truck;
Implement acid fracturing:
First simultaneously inject 40 sides' FRK-KFJ fracture acidizing control seam agent and the preposition acid that 25 sides prepare to Oil/gas Well target zone; Then inject polyacid, 17 sides' liquid nitrogen and 3 sides' CDS-10 frozen glue acid crosslinking agent that 300 sides prepare simultaneously; Then 9 sides' liquid nitrogen reinjects; Then inject 9 sides' liquid nitrogen, the high-strength ceramsite sand petroleum fracturing propping agent of polyacid, 1.6 sides' CDS-10 frozen glue acid crosslinking agent and 13 sides' 69MPa that 160 sides prepare simultaneously; After 6 hours, all liq that injects well head is discharged to clean-up pit, when discharge opeing is weak, utilizes 12 side's liquid nitrogen and 8 bubble rod rows going back the thoroughly row of returning of perforated interval.
Embodiment tetra-
The polyacid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 65% that mass concentration is 31%, mass concentration is 85% formic acid 8%, CHS-5 acidification high temperature inhibiter 1%, CDC-10 frozen glue acid thickening agent 0.4%, TWJ acidifying ferrous stability 1%, SZJ-3 acid fracturing cleanup additive 0.2%, clear water 24.4%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the first sour tank, then mixes by pump truck;
The preposition acid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 55% that mass concentration is 31%, CHS-5 acidification high temperature inhibiter 1%, TWJ acidifying ferrous stability 1%, SZJ-3 acid fracturing cleanup additive 0.2%, clear water 42.8%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the second sour tank, then mixes by pump truck;
Implement acid fracturing:
First simultaneously inject 20 sides' FRK-KFJ fracture acidizing control seam agent and the preposition acid that 10 sides prepare to Oil/gas Well target zone; Then inject polyacid, 5 sides' liquid nitrogen and 1 side's CDS-10 frozen glue acid crosslinking agent that 100 sides prepare simultaneously; Then 5 sides' liquid nitrogen reinjects; Then inject 5 sides' liquid nitrogen, the high-strength ceramsite sand petroleum fracturing propping agent of polyacid, 0.5 side's CDS-10 frozen glue acid crosslinking agent and 4 sides' 69MPa that 50 sides prepare simultaneously; After 1 hour, all liq that injects well head is discharged to clean-up pit, when discharge opeing is weak, utilizes 5 side's liquid nitrogen and 3 bubble rod rows going back the thoroughly row of returning of perforated interval.
Embodiment five
The polyacid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 80% that mass concentration is 31%, mass concentration is 85% formic acid 12%, CHS-5 acidification high temperature inhibiter 2%, CDC-10 frozen glue acid thickening agent 0.8%, TWJ acidifying ferrous stability 2%, SZJ-3 acid fracturing cleanup additive 0.4%, clear water 2.8%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the first sour tank, then mixes by pump truck;
The preposition acid in the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid of the present invention, take by mass percentage following raw material: the technical hydrochloric acid 70% that mass concentration is 31%, CHS-5 acidification high temperature inhibiter 2%, TWJ acidifying ferrous stability 2%, SZJ-3 acid fracturing cleanup additive 0.4%, clear water 25.6%, the content summation of above component is 100%, the above-mentioned raw material taking is added in the second sour tank, then mixes by pump truck;
Implement acid fracturing:
First simultaneously inject 50 sides' FRK-KFJ fracture acidizing control seam agent and the preposition acid that 30 sides prepare to Oil/gas Well target zone; Then inject polyacid, 20 sides' liquid nitrogen and 4 sides' CDS-10 frozen glue acid crosslinking agent that 400 sides prepare simultaneously; Then 10 sides' liquid nitrogen reinjects; Then inject 10 sides' liquid nitrogen, the high-strength ceramsite sand petroleum fracturing propping agent of polyacid, 2 sides' CDS-10 frozen glue acid crosslinking agent and 16 sides' 69MPa that 200 sides prepare simultaneously; After 8 hours, all liq that injects well head is discharged to clean-up pit, when discharge opeing is weak, utilizes 15 side's liquid nitrogen and 10 bubble rod rows going back the thoroughly row of returning of perforated interval.
Claims (4)
1. the high acidifying fracturing process of sand adjustable slit is taken in many yuan of frozen glue acid, it is characterized in that, comprises the following steps:
Step 1: prepare polyacid
According to mass percent, take following raw material: hydrochloric acid: 65%-80%, formic acid: 8%-12%, acidification corrosion inhibitor: 1%-2%, thickening agent: 0.4%-0.8%, ferrous stability: 1%-2%, cleanup additive: 0.2%-0.4%, clear water: 2.8%-24.4%, the mass percent sum of each component is 100% above, in above ratio, raw material is added in the first sour tank, then mixes by pump truck, obtain polyacid;
Step 2: prepare preposition acid
According to mass percent, take following raw material: hydrochloric acid: 55%-70%, acidification corrosion inhibitor: 1%-2%, ferrous stability: 1%-2%, cleanup additive: 0.2%-0.4%, clear water: 25.6%-42.8%, the mass percent sum of each component is 100% above, in above ratio, raw material is added in the second sour tank, then mixes by pump truck, obtain preposition acid;
Step 3: implement acid fracturing:
First simultaneously inject 20 side-50 sides' control seam agent and the preposition acid that 10 side-30 measured step rapid 2 are made to Oil/gas Well target zone; Then inject polyacid, 5 side-20 sides' liquid nitrogen and 1 side-4 side's crosslinking agent that 100 side-400 measured step rapid 1 are made simultaneously; Then 5 side-10 sides' liquid nitrogen reinjects; Then inject 5 side-10 sides' liquid nitrogen, polyacid, 0.5 side-2 side's crosslinking agent and 4 side-16 sides' the ceramsite sand that 50 side-200 measured step rapid 1 are made simultaneously; After 1-8 hour, all liq that injects well head is discharged to clean-up pit, complete acid fracturing.
2. the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid according to claim 1, it is characterized in that: in described step 3, when in the end discharge opeing, utilize 5 side-15 side's liquid nitrogen and 3-10 root bubble rod row going back the thoroughly row of returning of perforated interval.
3. the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid according to claim 1, it is characterized in that: hydrochloric acid described in described step 1,2 is that mass concentration is 31% technical hydrochloric acid.
4. the high acidifying fracturing process of sand adjustable slit is taken in polynary frozen glue acid according to claim 1, it is characterized in that: formic acid described in described step 1 is that mass concentration is not less than 85% formic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177405.2A CN103982169B (en) | 2014-04-29 | 2014-04-29 | Sand adjustable slit height acidifying fracturing process is taken in polynary frozen glue acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177405.2A CN103982169B (en) | 2014-04-29 | 2014-04-29 | Sand adjustable slit height acidifying fracturing process is taken in polynary frozen glue acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982169A true CN103982169A (en) | 2014-08-13 |
| CN103982169B CN103982169B (en) | 2016-08-31 |
Family
ID=51274311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410177405.2A Expired - Fee Related CN103982169B (en) | 2014-04-29 | 2014-04-29 | Sand adjustable slit height acidifying fracturing process is taken in polynary frozen glue acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103982169B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437706A (en) * | 2020-11-03 | 2022-05-06 | 中国石油化工股份有限公司 | Polyhydrogen cross-linked acid liquid and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080190609A1 (en) * | 2007-02-08 | 2008-08-14 | Robb Ian D | Methods for reducing the viscosity of treatment fluids comprising diutan |
| CN101265406A (en) * | 2008-05-09 | 2008-09-17 | 中国石油天然气股份有限公司 | Pad acid liquid and pad acid sand fracturing method |
| CN101353958A (en) * | 2007-07-25 | 2009-01-28 | 中国石油天然气股份有限公司 | Acid fracturing process of oil gas well mining temperature control various mucic acid |
| CN102392627A (en) * | 2011-11-16 | 2012-03-28 | 中国石油天然气股份有限公司 | Method for improving oil field recovery rate |
| CN103726819A (en) * | 2013-12-27 | 2014-04-16 | 中国石油大学(华东) | Method of low-temperature gas-assisted coalbed methane fracturing technology |
-
2014
- 2014-04-29 CN CN201410177405.2A patent/CN103982169B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080190609A1 (en) * | 2007-02-08 | 2008-08-14 | Robb Ian D | Methods for reducing the viscosity of treatment fluids comprising diutan |
| CN101353958A (en) * | 2007-07-25 | 2009-01-28 | 中国石油天然气股份有限公司 | Acid fracturing process of oil gas well mining temperature control various mucic acid |
| CN101265406A (en) * | 2008-05-09 | 2008-09-17 | 中国石油天然气股份有限公司 | Pad acid liquid and pad acid sand fracturing method |
| CN102392627A (en) * | 2011-11-16 | 2012-03-28 | 中国石油天然气股份有限公司 | Method for improving oil field recovery rate |
| CN103726819A (en) * | 2013-12-27 | 2014-04-16 | 中国石油大学(华东) | Method of low-temperature gas-assisted coalbed methane fracturing technology |
Non-Patent Citations (1)
| Title |
|---|
| 闫海建等: "控缝高压裂技术在瓦窑堡油田的应用研究", 《中国科技信息》, 31 May 2012 (2012-05-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437706A (en) * | 2020-11-03 | 2022-05-06 | 中国石油化工股份有限公司 | Polyhydrogen cross-linked acid liquid and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982169B (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106050213B (en) | A kind of sandstone reservoir low damage distributary acid method | |
| CN109751029B (en) | Deep shale gas fracturing method | |
| CN110159243B (en) | Acid fracturing method for seam network of carbonate rock reservoir | |
| CN106567702A (en) | Method for improving complexity index of deep shale gas fracture | |
| CN104879113A (en) | Compound acid fracturing method for carbonate reservoir | |
| CN105089596A (en) | Hydraulic fracturing treatment method of an unconventional reservoir oil and gas well | |
| CN110792421B (en) | Fracturing process for development and application of low-permeability heterogeneous sandstone oil-gas layer | |
| CN104479653A (en) | Retarding-swelling salt-tolerant high-viscoelasticity particles with interpenetrating network structure and preparation method thereof | |
| CN111648755B (en) | Method for promoting balanced expansion of multiple clusters of cracks through ball throwing and temporary plugging | |
| CN106801597A (en) | Heavy crude reservoir combined type flooding method and displacement composition | |
| CN104312570A (en) | Low-corrosion chemical themogenic pressurizing gel breaker and preparation method thereof | |
| CN105683330A (en) | Carbonate-based slurry fracturing with solid acid for unconventional reservoir | |
| CN103953324B (en) | Polynary turn to acid adjustable slit height acidifying fracturing process | |
| WO2015074588A1 (en) | Zirconium dispersed-particle gel combination flooding system and preparation method thereof | |
| CN109826590A (en) | A kind of old well water blockoff fracturing process of hypotonic oil gas field High water cut | |
| CN106337676A (en) | Method of fracturing coal-bed gas reservoir | |
| CN105086990A (en) | Composite acid fracturing working fluid and preparation method thereof | |
| CN106958438B (en) | A kind of method for removing blockage of polymer flooding blocking well | |
| CN102352235A (en) | Crosslinked acid fracturing fluid and preparation method thereof | |
| CN103468237A (en) | Clean fracturing fluid and preparation method thereof | |
| CN103982169A (en) | Polybasic jelly acid sand carrying seam-adjustable acid fracturing method | |
| CN106893573A (en) | A kind of biological fracturing fluid system and its preparation and application | |
| US10961439B2 (en) | Degradable thermosetting compositions for enhanced well production | |
| CN103952130A (en) | Temporary blocking gel for low-pressure oil-gas well and preparation method thereof | |
| CN106833594B (en) | filtrate reducers and pure liquid CO without viscosity increasing2Application in sand fracturing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170429 |