CN203321479U - Multi-section fracturing string for oil field horizontal well - Google Patents
Multi-section fracturing string for oil field horizontal well Download PDFInfo
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- CN203321479U CN203321479U CN2013203201145U CN201320320114U CN203321479U CN 203321479 U CN203321479 U CN 203321479U CN 2013203201145 U CN2013203201145 U CN 2013203201145U CN 201320320114 U CN201320320114 U CN 201320320114U CN 203321479 U CN203321479 U CN 203321479U
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- fracturing
- horizontal well
- string
- packer
- pressure
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- 239000007788 liquid Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 12
- 239000004576 sand Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 244000007835 Cyamopsis tetragonoloba Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- -1 hydroxypropyl Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A multi-section fracturing string for an oil field horizontal well is characterized in that a release packer (1), a fracturing sliding sleeve (2), a detachable packer (3) and a constant pressure ball seat (4) are sequentially connected together through an oil pipe. The utility model is used for in the horizontal well staged fracturing, can the oil recovery casing string as the working string to adopt the bowling to open formula fracturing sliding sleeve (2) step by step, thereby simplify the operation procedure, reduce the liquid friction resistance in the pit, and can realize once constructing the multistage fracturing.
Description
Technical field: the utility model relates to a kind of flow string technology, especially for a kind of oilfield horizontal well multistage fracturing string of horizontal well production.
Background technology: before the utility model, each oilfield horizontal well is adopted drawing type or mechanical type fracturing strings more, because this tubing string is to adopt tubing string as work string, and need repeatedly to propose, put the brill operation in work progress, not only complicated operation, down-hole fluid flow frictional resistance are large, have also limited the hop count of staged fracturing.
Summary of the invention: the purpose of this utility model is: for staged fracturing of horizontal well provides a kind of oilfield horizontal well multistage fracturing string, because this tubing string is to using the long string post as work string, and adopt pitching opening type fracturing sliding bush step by step, thereby simplified operation sequence, reduced the down-hole fluid flow frictional resistance, improved the possibility that increases the staged fracturing hop count.
The purpose of this utility model realizes by following measures: a kind of oilfield horizontal well multistage fracturing string, comprise back-off packer, fracturing sliding bush, the packer that can disconnect, level pressure ball seat, it is characterized in that back-off packer, fracturing sliding bush, the packer that can disconnect, level pressure ball seat be connected in turn by oil pipe.
The purpose of this utility model can also realize by following measures: in oilfield horizontal well multistage fracturing string, can consist of multistage fracturing sliding sleeve, the packer that can disconnect.
The utility model is for staged fracturing of horizontal well, can the long string post as work string, and adopt pitching opening type fracturing sliding bush step by step, thereby simplified operation sequence, reduce the down-hole fluid flow frictional resistance, and can realize the constructing multi-section pressure break one time.
Accompanying drawing explanation: the schematic diagram that Fig. 1 is oilfield horizontal well multistage fracturing string.
The specific embodiment: oilfield horizontal well multistage fracturing string comprises back-off packer 1, fracturing sliding bush 2, the packer 3 that can disconnect, level pressure ball seat 4 etc., back-off packer 1, fracturing sliding bush 2, the packer 3 that can disconnect, level pressure ball seat 4 are connected in turn by oil pipe, and the pressure break combination wherein consisted of fracturing sliding bush 2, the packer 3 that can disconnect is should be 10-15 level relative to stratum 5.
The specific embodiment of oilfield horizontal well multistage fracturing string, Ji Ping-3 horizontal well multistage fracturing string performance:
10 sections totally 36 bunches of 2000 meters of this well finishing drilling well depths, 1000 meters of vertical depths, horizontal movement 816m, approximately 100 ℃ of formation temperatures, target zone mean permeability 1.5 millidarcies, degree of porosity 11%, shale content 20%, casing cementing completion, extended horizontal depth 546m, perforation, adopt the multistage many bunches of volumes transformation of sleeve pipe inner sliding sleeve segmentation fracturing string.Design fracture half-length 150-170 rice, 5 cubes m/mins of pressing crack construction discharge capacities, full well adding ceramic 580 cubic metres of (every grade approximately 60 cubic metres), total 9699 cubic metres of liquid measures (the crosslinked fracturing fluid of water base hydroxypropyl guar organic boron), prepad fluid accounts for total liquid measure 40%, fracture pressure 41 MPas, sand than 13.2%-14.5%, operation pressure 30-42.5 MPa, clossing pressure 44 MPas.
1, fracturing string---by design pipe string structural order fracturing tubing string, structure is shown in Fig. 1 (grade HT-93 sliding sleeve+1, grade Y441-114 packer+10, oil pipe+10 grade PSQ-93 ball seat), and tubing string removes speed and is no more than 10 m/mins;
2, well head is installed---adopt 700 type fracture well heads and 700 type pressure break elbows, spot cars, adapter line, surface line circulation, configuration fracturing fluid (additive therefor and water clean and accurate-metering);
3, press front the preparation---the packer magnetic orientation degree of depth is checked, the through wash well, presses accurate deadline and the pressure break time interval to be no more than 12 hours;
4, ground pressure testing---plug valve upper accepting water horizontal well plug dropping feeder, pressure break elbow, 27/8 inch high pressure pipe joint, surface line pressure testing 65 MPas are also monitored not sting in 10 minutes and are not leaked rear pressure release;
5, the Feng Qiguan that rises---this well is once constructed for 10 sections pressure breaks of cover inner sliding sleeve, first oil pipe pressurization makes whole packers envelope that rises, improve again pressure and open first paragraph pressure break passage, safety joint is thrown off in pitching, then trip out the top oil pipe, carry out sleeve pipe pressure break step by step, each section of constructing is all to realize the unlatching of sliding sleeve by delivering the lightweight ball;
6, pump prepad fluid---operation pressure prediction (extending pressure gradient=0.017-0.022) well head pressure 40-48 MPa (pump truck power 3918--4083 water horse power), employing can be made in advance seam and can observe the gelled fracturing fluid of fracture extension situation for load fluid;
7, pump load fluid---the employing stage adds the sand sand mo(u)ld, occurs in work progress that pressure raises suddenly, should stop immediately adding sand and suitably improves operational discharge capacity or end construction, the empty anti-row if sand plug begins to rehearse immediately;
8, pump displacement fluid---stop adding after sand when load fluid density drops to density own and start to measure displacement fluid, replacement can not be excessive;
9, closing well open flow---the closed-in time should be no less than the fracturing fluid break time, selects the suitable oil nozzle row of returning fast, returns continuously in time discharge fracturing fluid after stop-spraying.
Claims (2)
1. an oilfield horizontal well multistage fracturing string, comprise back-off packer, fracturing sliding bush, the packer that can disconnect, level pressure ball seat, and it is characterized in that: back-off packer, fracturing sliding bush, the packer that can disconnect, level pressure ball seat are connected in turn by oil pipe.
2. oilfield horizontal well multistage fracturing string according to claim 1 is characterized in that: fracturing sliding bush, the packer that can disconnect are multistagely to connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203201145U CN203321479U (en) | 2013-06-05 | 2013-06-05 | Multi-section fracturing string for oil field horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203201145U CN203321479U (en) | 2013-06-05 | 2013-06-05 | Multi-section fracturing string for oil field horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321479U true CN203321479U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203201145U Expired - Fee Related CN203321479U (en) | 2013-06-05 | 2013-06-05 | Multi-section fracturing string for oil field horizontal well |
Country Status (1)
| Country | Link |
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| CN (1) | CN203321479U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106795747A (en) * | 2014-10-03 | 2017-05-31 | 埃克森美孚上游研究公司 | Method for remedying sand fallout during completion |
| CN112324415A (en) * | 2020-11-05 | 2021-02-05 | 中国石油天然气股份有限公司 | Combined segmented reconstruction method for selective repeated reconstruction of old well |
| CN113123762A (en) * | 2020-01-16 | 2021-07-16 | 中国石油天然气股份有限公司 | Fracturing method for coal bed gas multi-branch horizontal well |
-
2013
- 2013-06-05 CN CN2013203201145U patent/CN203321479U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106795747A (en) * | 2014-10-03 | 2017-05-31 | 埃克森美孚上游研究公司 | Method for remedying sand fallout during completion |
| CN106795747B (en) * | 2014-10-03 | 2019-05-17 | 埃克森美孚上游研究公司 | Method for remedying sand fallout during complete well |
| CN113123762A (en) * | 2020-01-16 | 2021-07-16 | 中国石油天然气股份有限公司 | Fracturing method for coal bed gas multi-branch horizontal well |
| CN112324415A (en) * | 2020-11-05 | 2021-02-05 | 中国石油天然气股份有限公司 | Combined segmented reconstruction method for selective repeated reconstruction of old well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131204 Termination date: 20210605 |