CN108678718A - A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing - Google Patents
A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing Download PDFInfo
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- CN108678718A CN108678718A CN201810401323.XA CN201810401323A CN108678718A CN 108678718 A CN108678718 A CN 108678718A CN 201810401323 A CN201810401323 A CN 201810401323A CN 108678718 A CN108678718 A CN 108678718A
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- Prior art keywords
- well
- jet
- oil
- perforation
- water
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
The invention discloses a kind of methods that oil/gas well straight well orients water-jet separate stratum fracfturing, include the following steps：Pit shaft is pre-processed；Into pit shaft, tripping in orients water-jet staged fracturing operating tool string；Hydraulic ejector is positioned, is allowed to be accurately aimed at target zone；Judge whether the azimuth of positioning seat rocket body meets the requirements；Carry out pressing crack construction；The method of oil/gas well straight well orientation water-jet separate stratum fracfturing can adjust perforation angle before perforation, it is set to be directed at best perforation orientation, the formation fracture pressure and near-wellbore effect when well fracturing can be effectively reduced when pressure break, a wider smooth crack is formed in reservoir, to solve the problems, such as that conventional hydraulic abrasive perforating perforation efficiency is low and bending friction is big, formation fracture pressure is reduced, well fracturing effect is improved.
Description
Technical field
The present invention relates to oil and gas gathering technical field, more particularly to a kind of oil/gas well straight well orients water-jet separate stratum fracfturing
Method.
Background technology
The common hydraulic jet perforation mode of oil gas field is mainly spiral perforation, random due to its abrasive perforating direction
Property, perforation may be misaligned with desirable orientation, and the complex fractures such as crack and multiple cracking are turned to generate, and is unfavorable for reservoir and changes
It makes.
Invention content
The object of the present invention is to provide a kind of methods that oil/gas well straight well orients water-jet separate stratum fracfturing.
For this purpose, technical solution of the present invention is as follows：
A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing, includes the following steps：
1) to the processing of pit shaft progress well-flushing, kill-job and dredging, scraping wall；
2) into pit shaft, tripping in orients water-jet staged fracturing operating tool string；
3) hydraulic ejector is positioned using banded cable magnetic locator, is allowed to be accurately aimed at target zone；
4) the tripping in gyro logging instrument from the oil pipe of staged fracturing operating tool string, it is fixed for measuring staged fracturing operating tool string
The azimuth of rocket body is sat in position, and judges whether the azimuth measured meets the requirements, if judging result is "No", by well head
Oil pipe is rotated to twist spraycan, the eyelet phase angular alignment of spraycan is made to spray target zone；If judging result is "Yes",
Then enter in next step；
5) fracture well head is installed, pressing crack construction vehicle group is set, connects bottom surface pipeline, carrying out pressure break after pressure testing qualification applies
Work；It opens hydrajet tool step by step using pitching and carries out staged fracturing injection.
Further, it carries out including the following steps in pressing crack construction process in the step 5)：
A wellhead casing pipe gate) is opened, is replaced so that the discharge capacity progress of 0.5~1.0m3/min is low, one hole volume of replacement
Liquid measure；
B) it is low replace after the completion of, by default sand ratio and design the perforating job that perforation discharge capacity carries out first segment, sand-laden fluid is logical
It crosses base injcction device and forms high-speed jet, be shot through casing and stratum；
C after the completion of) first segment adds sand, the low-density ball of input and the matching of second segment sliding sleeve injector, release discharge capacity should be controlled
System is in 1.0m3Within/min, ball is fallen on the ball seat of sliding sleeve injector, is opened sliding sleeve and is exposed nozzle, carries out the sandblasting of second segment
Perforating and fracturing；
D step C) is repeated), realize multistage pressing crack construction.
Compared with prior art, the method for oil/gas well straight well orientation water-jet separate stratum fracfturing can be adjusted before perforation
Perforation angle makes its be directed at best perforation orientation, and when pressure break can effectively reduce formation fracture pressure when well fracturing
Power and near-wellbore effect form a wider smooth crack in reservoir, to solve conventional hydraulic abrasive perforating perforation effect
Rate is low and the big problem of bending friction, reduction formation fracture pressure improve well fracturing effect.
Description of the drawings
Fig. 1 is the flow chart for the method that oil/gas well straight well provided by the invention orients water-jet separate stratum fracfturing.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any restrictions.
A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing, as shown in Figure 1, including the following steps：
1) to the processing of pit shaft progress well-flushing, kill-job and dredging, scraping wall, the preparation before construction is completed,
2) into pit shaft, tripping in orients water-jet staged fracturing operating tool string；
3) hydraulic ejector is positioned using banded cable magnetic locator, is allowed to be accurately aimed at target zone；
4) the tripping in gyro logging instrument from the oil pipe of staged fracturing operating tool string, it is fixed for measuring staged fracturing operating tool string
The azimuth of rocket body is sat in position, and judges whether the azimuth measured meets the requirements, if judging result is "No", by well head
Oil pipe is rotated to twist spraycan, the eyelet phase angular alignment of spraycan is made to spray target zone；If judging result is "Yes",
Then enter in next step；
5) fracture well head is installed, pressing crack construction vehicle group is set, connects bottom surface pipeline, carrying out pressure break after pressure testing qualification applies
Work；Include the following steps in pressing crack construction process：
A wellhead casing pipe gate) is opened, is replaced so that the discharge capacity progress of 0.5~1.0m3/min is low, one hole volume of replacement
Liquid measure；
B) it is low replace after the completion of, by default sand ratio and design the perforating job that perforation discharge capacity carries out first segment, sand-laden fluid is logical
It crosses base injcction device and forms high-speed jet, be shot through casing and stratum；
C after the completion of) first segment adds sand, the low-density ball of input and the matching of second segment sliding sleeve injector, release discharge capacity should be controlled
System is in 1.0m3Within/min, ball is fallen on the ball seat of sliding sleeve injector, is opened sliding sleeve and is exposed nozzle, carries out the sandblasting of second segment
Perforating and fracturing；
D step C) is repeated), realize multistage pressing crack construction；Up to ten sections of pressing crack construction, pressing crack construction at most may be implemented
After the completion, open flow drain, low-density is asked returned from shaft bottom from, and by be installed on well head tip-in device capture recycling, realize full well
The without hindrance production of cylinder.
Claims (2)
1. a kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing, which is characterized in that include the following steps：
1) to the processing of pit shaft progress well-flushing, kill-job and dredging, scraping wall；
2) into pit shaft, tripping in orients water-jet staged fracturing operating tool string；
3) hydraulic ejector is positioned using banded cable magnetic locator, is allowed to be accurately aimed at target zone；
4) the tripping in gyro logging instrument from the oil pipe of staged fracturing operating tool string is sat for measuring the positioning of staged fracturing operating tool string
The azimuth of rocket body, and judge whether the azimuth measured meets the requirements, if judging result is "No", by being rotated in well head
Oil pipe twists spraycan, and the eyelet phase angular alignment of spraycan is made to spray target zone；If judging result is "Yes", into
Enter in next step；
5) fracture well head is installed, pressing crack construction vehicle group is set, connects bottom surface pipeline, pressing crack construction is carried out after pressure testing qualification；Profit
It opens hydrajet tool step by step with pitching and carries out staged fracturing injection.
2. the method for oil/gas well straight well orientation water-jet separate stratum fracfturing according to claim 1, which is characterized in that described
Step 5) in carry out pressing crack construction process in include the following steps：
A wellhead casing pipe gate) is opened, is replaced so that the discharge capacity progress of 0.5~1.0m3/min is low, replaces the liquid measure of a hole volume；
B) it is low replace after the completion of, by default sand ratio and design the perforating job that perforation discharge capacity carries out first segment, sand-laden fluid passes through bottom
Portion's injector forms high-speed jet, is shot through casing and stratum；
C after the completion of) first segment adds sand, the low-density ball of input and the matching of second segment sliding sleeve injector, release discharge capacity should control
1.0m3Within/min, ball is fallen on the ball seat of sliding sleeve injector, is opened sliding sleeve and is exposed nozzle, carries out the abrasive perforating of second segment
Pressure break；
D step C) is repeated), realize multistage pressing crack construction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401323.XA CN108678718A (en) | 2018-04-28 | 2018-04-28 | A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing |
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| CN201810401323.XA CN108678718A (en) | 2018-04-28 | 2018-04-28 | A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing |
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| CN108678718A true CN108678718A (en) | 2018-10-19 |
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| CN201810401323.XA Pending CN108678718A (en) | 2018-04-28 | 2018-04-28 | A kind of method of oil/gas well straight well orientation water-jet separate stratum fracfturing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112617A (en) * | 2019-06-04 | 2020-12-22 | 中国石油化工股份有限公司 | Method for developing thick-layer conglomerate oil reservoir by ectopic energy storage fracturing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106439Y (en) * | 2007-12-19 | 2008-08-27 | 吉林石油集团有限责任公司 | Orientation mechanism for high-precision perforating |
| CN201778771U (en) * | 2010-07-28 | 2011-03-30 | 中国石油天然气股份有限公司 | Fixed tubular column hydraulic jetting layer separating and fracturing integral tubular column |
| CN102278098A (en) * | 2011-08-12 | 2011-12-14 | 中国石油天然气股份有限公司 | Method for realizing accurate oriented perforating by cable transmission |
| CN105201461A (en) * | 2015-09-02 | 2015-12-30 | 北京泰坦通源天然气资源技术有限公司 | Multistage sand jet perforation and fracture combined operation method adopting coiled tubing and bottom packer |
-
2018
- 2018-04-28 CN CN201810401323.XA patent/CN108678718A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106439Y (en) * | 2007-12-19 | 2008-08-27 | 吉林石油集团有限责任公司 | Orientation mechanism for high-precision perforating |
| CN201778771U (en) * | 2010-07-28 | 2011-03-30 | 中国石油天然气股份有限公司 | Fixed tubular column hydraulic jetting layer separating and fracturing integral tubular column |
| CN102278098A (en) * | 2011-08-12 | 2011-12-14 | 中国石油天然气股份有限公司 | Method for realizing accurate oriented perforating by cable transmission |
| CN105201461A (en) * | 2015-09-02 | 2015-12-30 | 北京泰坦通源天然气资源技术有限公司 | Multistage sand jet perforation and fracture combined operation method adopting coiled tubing and bottom packer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112617A (en) * | 2019-06-04 | 2020-12-22 | 中国石油化工股份有限公司 | Method for developing thick-layer conglomerate oil reservoir by ectopic energy storage fracturing |
| CN112112617B (en) * | 2019-06-04 | 2024-03-01 | 中国石油化工股份有限公司 | Method for developing thick-layer sand conglomerate oil reservoir by ectopic energy storage fracturing |
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Application publication date: 20181019 |