CN109372485B - Fracturing monitoring production allocation device for gas well - Google Patents
Fracturing monitoring production allocation device for gas well Download PDFInfo
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- CN109372485B CN109372485B CN201811351272.0A CN201811351272A CN109372485B CN 109372485 B CN109372485 B CN 109372485B CN 201811351272 A CN201811351272 A CN 201811351272A CN 109372485 B CN109372485 B CN 109372485B
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- fracturing
- production allocation
- positioning
- sand blasting
- double
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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
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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
- E21B47/00—Survey of boreholes or wells
Abstract
The invention relates to the technical field of oil and gas production engineering, and belongs to a fracturing monitoring production allocation device for a gas well. The problem that a tubular column cannot have multi-layer fracturing and separate-layer monitoring production allocation functions simultaneously in the prior art is solved. The fracturing production allocation device comprises a fracturing production allocation device and an integrated production allocation monitor, and comprises a positioning connector (1), an anti-rotation pin (2), a soluble bushing (3), a shearing pin (4), a sand blasting body (5), a fishing head (6), a positioning outer sleeve (7), a spring piece (8), a supporting sleeve (9), a positioning block (10), a central pipe (11), an upper V-shaped rubber ring (12), a double-channel pressure gauge (13), an upper air nozzle (14), a double-hole rod (15), a connecting cylinder (16), a single-channel pressure gauge (17), a lower V-shaped rubber ring (18), a lower air nozzle (19) and a single-hole connector (20). The invention has the advantages of simple structure, capability of reducing construction procedures, reduction of reservoir damage and the like.
Description
The technical field is as follows: the invention relates to the technical field of oil and gas production engineering, and belongs to a fracturing monitoring production allocation device for a gas well.
Background art: the natural gas well of the Daqing oil field can be put into operation only by means of fracturing, and along with the gradual decrease of the yield of the gas well, the productivity of the gas well needs to be fully exerted by reasonably allocating each gas layer of the gas well. The prior art does not have the function of simultaneously meeting the requirements of multilayer fracturing and layered monitoring production allocation by one string, the problem is solved by firstly putting one fracturing string and then putting one separate production string, and the replacement of the string not only increases the operation risk and the operation period, but also causes secondary damage to a reservoir stratum and reduces the productivity of a gas well.
The invention content is as follows: the invention aims to develop a fracturing monitoring production allocation device for a gas well, which can simultaneously meet the requirements of multilayer fracturing and layered monitoring production allocation of the gas well by one time of underground pipe columns.
The invention is realized by the following technical scheme: a fracturing monitoring production allocation device for a gas well comprises a fracturing production allocator and an integrated production allocation monitor;
the fracturing production allocator comprises a positioning joint, an anti-rotation pin, a soluble bushing, a shearing pin and a sand blasting body; the positioning joint is in threaded connection with the sand blasting body and is fixed through an anti-rotation pin, and the soluble bushing is sleeved in the sand blasting body and is fixed in the sand blasting body through a shearing pin;
the integrated production allocation monitor consists of a fishing head, a positioning outer sleeve, a spring piece, a supporting sleeve, a positioning block, a central pipe, an upper V-shaped rubber ring, a double-channel pressure gauge, an upper air nozzle, a double-hole rod, a connecting cylinder, a single-channel pressure gauge, a lower V-shaped rubber ring, a lower air nozzle and a single-hole joint; the fishing head is in threaded connection with the supporting sleeve, the upper end of the spring piece is fixed in a hole of the positioning outer sleeve, the lower end of the spring piece is inserted into a hole of the positioning block, the supporting sleeve, the spring piece and the positioning block are sequentially arranged outside the central tube, the upper end of the central tube is in threaded connection with the lower end of the positioning outer sleeve, the upper V-shaped rubber ring and the lower V-shaped rubber ring are respectively arranged outside the central tube and the single-channel pressure gauge, the lower end of the double-channel pressure gauge is inserted into a key groove at the upper end of the double-hole rod, the upper air nozzle and the lower air nozzle are respectively arranged in a side-wall channel of the double-hole rod and a channel of the single-hole joint;
the fracturing production allocation device and the integrated production allocation monitor are fixedly connected in an annular groove of the positioning joint in a clamping manner through a positioning block;
a double-hole rod of the integrated production allocation monitor is drilled with a side wall channel and an axial channel.
The positioning joint and the sand blasting body of the fracturing production allocator are both made of high-strength stainless steel materials, the interiors of the positioning joint and the sand blasting body are protected by coatings made of tungsten carbide alloy materials, an annular groove is formed in the positioning joint of the fracturing production allocator, and two symmetrical rectangular sand blasting ports are formed in the radial direction of the sand blasting body.
The soluble lining of the fracturing production allocator is made of soluble materials, and the outer layer of the soluble lining is protected by polyether-ether-ketone paint.
Compared with the prior art, the invention has the following advantages:
the invention has simple and convenient process, reduces the operation risk, avoids secondary damage of a reservoir caused by replacing the pipe column, and realizes the functions of layered fracturing, monitoring and production allocation of the pipe column once. The soluble bushing in the fracturing production allocator is made of soluble materials, so that the soluble bushing is completely soluble after fracturing, the large drift diameter of a pipe column is kept, the problem that the gas well cannot be subjected to layered monitoring production allocation under the limitation of the conventional fracturing tool is solved, and meanwhile, the fracturing production allocator is excellent in pressure-bearing, temperature-resistant and wear-resistant performances and can completely meet the high-temperature and high-pressure application environment of a deep well.
Description of the drawings: FIG. 1 is a schematic diagram of the present invention; FIG. 2 is a schematic diagram of a fracture distributor configuration; fig. 3 is a schematic diagram of an integrated production allocation monitor.
In the figure: 1-positioning joint, 2-anti-rotation pin, 3-soluble bush, 4-shearing pin, 5-sand-blasting body, 6-fishing head, 7-positioning outer sleeve, 8-spring piece, 9-supporting sleeve, 10-positioning block, 11-central tube, 12-upper V-shaped rubber ring, 13-double-channel pressure gauge, 14-upper air nozzle, 15-double-hole rod, 16-connecting cylinder, 17-single-channel pressure gauge, 18-lower V-shaped rubber ring, 19-lower air nozzle, 20-single-hole joint, 21-annular groove, 22-sand-blasting opening, 23-side wall channel and 24-axial channel.
The specific implementation mode is as follows: the invention is described in further detail below with reference to the accompanying drawings: a fracturing monitoring production allocation device for a gas well comprises a fracturing production allocator and an integrated production allocation monitor;
the fracturing production allocator comprises a positioning joint 1, an anti-rotation pin 2, a soluble bushing 3, a shearing pin 4 and a sand blasting body 5; the positioning joint 1 is in threaded connection with the sand blasting body 5 and is fixed through an anti-rotation pin 2, and the soluble bush 3 is sleeved in the sand blasting body 5 and is fixed in the sand blasting body 5 through a shearing pin 4;
the integrated production allocation monitor consists of a fishing head 6, a positioning outer sleeve 7, a spring piece 8, a supporting sleeve 9, a positioning block 10, a central pipe 11, an upper V-shaped rubber ring 12, a double-channel pressure gauge 13, an upper air nozzle 14, a double-hole rod 15, a connecting cylinder 16, a single-channel pressure gauge 17, a lower V-shaped rubber ring 18, a lower air nozzle 19 and a single-hole joint 20; the fishing head 6 is in threaded connection with a supporting sleeve 9, the upper end of a spring piece 8 is fixed in a hole of a positioning outer sleeve 7, the lower end of the spring piece 8 is inserted into a hole of a positioning block 10, the supporting sleeve 9, the spring piece 8 and the positioning block 10 are sequentially installed outside a central tube 11, the upper end of the central tube 11 is in threaded connection with the lower end of the positioning outer sleeve 7, an upper V-shaped rubber ring 12 and a lower V-shaped rubber ring 18 are respectively installed outside the central tube 11 and a single-channel pressure gauge 17, the lower end of a double-channel pressure gauge 13 is inserted into a key groove in the upper end of a double-hole rod 15, an upper air nozzle 14 and a lower air nozzle 19 are respectively placed into a side wall channel 23 of the double-hole rod 15 and a channel of a single-hole joint 20, and the central;
the fracturing production allocation device and the integrated production allocation monitor are fixedly connected in an annular groove 21 of the positioning joint 1 in a clamping mode through a positioning block 10;
the double bore rod 15 of the integrated production-allocation monitor is drilled with a side wall channel 23 and an axial channel 24.
The positioning joint 1 and the sand blasting body 5 of the fracturing production allocator are both made of high-strength stainless steel materials, the interiors of the positioning joint 1 and the sand blasting body 5 are protected by coatings made of tungsten carbide alloy materials, an annular groove 21 is formed in the positioning joint 1 of the fracturing production allocator, and two symmetrical rectangular sand blasting ports 22 are formed in the radial direction of the sand blasting body 5.
The soluble bushing 3 of the fracturing production allocator is made of soluble materials, and the outer layer of the soluble bushing is protected by polyether-ether-ketone paint.
When the fracturing production allocator is used on site, the fracturing packer is connected with the fracturing packer up and down, the connection mode can form a multi-stage fracturing tool string, the requirements of multilayer fracturing and layered production allocation of 2-6 layers can be met, and the fracturing tool string is connected with a fracturing oil pipe and is lowered to the designed depth in a well. Firstly, adding hydraulic pressure to a ground oil pipe to seat the packer, then implementing progressive fracturing in a wellhead ball throwing mode, enabling balls to fall to a soluble lining 3 of the fracturing production allocator, pressurizing to cut a shearing pin 4, pushing the balls and the soluble lining 3 to move downwards by hydraulic pressure to enable the oil pipe to be communicated with a target layer, then starting fracturing, and dissolving the soluble lining 3 after fracturing.
The integrated production allocation monitor is delivered to the fracturing production allocator by using a steel wire, the positioning block 10 is recovered when the steel wire is put in, and the positioning block 10 is popped up by releasing operation when the steel wire reaches a specified depth, so that the integrated production allocation monitor is clamped in the positioning annular groove 21 in the positioning connector 1 of the fracturing production allocator. The upper V-shaped rubber ring 12 and the lower V-shaped rubber ring 18 of the integrated production allocation monitor can effectively seal the area of the two sand blasting ports 22 of the fracturing production allocation monitor, and ensure that the gas on the layer can only enter the side wall channel 23 of the integrated production allocation monitor after passing through the sand blasting ports and then enter the oil pipe, and the gas on other layers also enters the side wall channel 23 of the integrated production allocation monitor on each layer and finally enters the oil pipe according to the mode. The double-channel pressure gauge 13 and the single-channel pressure gauge 17 can monitor the pressure of the upper air nozzle 14 and the pressure of the lower air nozzle 19 in front of the mouth and behind the mouth, the upper air nozzle 14 and the lower air nozzle 19 can be changed in reasonable sizes according to monitored data and production allocation requirements, and monitoring and production allocation of a gas well are achieved.
Claims (3)
1. The utility model provides a fracturing monitoring and production allocation device for gas well which characterized in that: the fracturing production allocation device consists of a fracturing production allocation device and an integrated production allocation monitor;
the fracturing production allocator comprises a positioning joint (1), an anti-rotation pin (2), a soluble bushing (3), a shearing pin (4) and a sand blasting body (5); the positioning joint (1) is in threaded connection with the sand blasting body (5) and is fixed through an anti-rotation pin (2), and the soluble lining (3) is sleeved in the sand blasting body (5) and is fixed in the sand blasting body (5) through a shearing pin (4);
the integrated production allocation monitor consists of a fishing head (6), a positioning outer sleeve (7), a spring piece (8), a supporting sleeve (9), a positioning block (10), a central pipe (11), an upper V-shaped rubber ring (12), a double-channel pressure gauge (13), an upper air nozzle (14), a double-hole rod (15), a connecting cylinder (16), a single-channel pressure gauge (17), a lower V-shaped rubber ring (18), a lower air nozzle (19) and a single-hole joint (20); the fishing head (6) is in threaded connection with the supporting sleeve (9), the upper end of the spring piece (8) is fixed in a hole of the positioning outer sleeve (7), the lower end of the spring piece is inserted into a hole of the positioning block (10), the supporting sleeve (9), the spring piece (8) and the positioning block (10) are sequentially installed outside the central tube (11), the upper end of the central tube (11) is in threaded connection with the lower end of the positioning outer sleeve (7), the upper V-shaped rubber ring (12) and the lower V-shaped rubber ring (18) are respectively installed outside the central tube (11) and the single-channel pressure gauge (17), the lower end of the double-channel pressure gauge (13) is inserted into a key groove in the upper end of the double-hole rod (15), the upper air nozzle (14) and the lower air nozzle (19) are respectively placed into a side wall channel (23) of the double-, the central tube (11), the dual-channel pressure gauge (13), the connecting cylinder (16), the single-channel pressure gauge (17) and the single-hole joint (20) are sequentially in threaded connection from top to bottom;
the fracturing production allocation device and the integrated production allocation monitor are fixedly connected in an annular groove (21) of the positioning joint (1) in a clamping mode through a positioning block (10);
a double-hole rod (15) of the integrated production allocation monitor is drilled with a side wall channel (23) and an axial channel (24).
2. The fracturing monitoring and production allocation device for the gas well as claimed in claim 1, wherein: the positioning joint (1) and the sand blasting body (5) of the fracturing production allocator are both made of high-strength stainless steel materials, the interiors of the positioning joint (1) and the sand blasting body are protected by coatings made of tungsten carbide alloy materials, an annular groove (21) is formed in the positioning joint (1) of the fracturing production allocator, and two symmetrical rectangular sand blasting ports (22) are formed in the radial direction of the sand blasting body (5).
3. The fracturing monitoring and production allocation device for the gas well as claimed in claim 1, wherein: the soluble bushing (3) of the fracturing production allocator is made of soluble materials, and the outer layer of the soluble bushing is protected by polyether-ether-ketone paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811351272.0A CN109372485B (en) | 2018-11-14 | 2018-11-14 | Fracturing monitoring production allocation device for gas well |
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| CN201811351272.0A CN109372485B (en) | 2018-11-14 | 2018-11-14 | Fracturing monitoring production allocation device for gas well |
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| CN109372485A CN109372485A (en) | 2019-02-22 |
| CN109372485B true CN109372485B (en) | 2021-03-09 |
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| CN110145292B (en) * | 2019-05-18 | 2022-03-08 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
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| US4488599A (en) * | 1982-08-30 | 1984-12-18 | Exxon Production Research Co. | Method of controlling displacement of propping agent in fracturing treatments |
| US6315041B1 (en) * | 1999-04-15 | 2001-11-13 | Stephen L. Carlisle | Multi-zone isolation tool and method of stimulating and testing a subterranean well |
| CN200978672Y (en) * | 2006-10-17 | 2007-11-21 | 中国石油化工股份有限公司 | Downhole crack pressure monitoring instrument |
| CN203296767U (en) * | 2013-06-24 | 2013-11-20 | 北京金科龙石油技术开发有限公司 | Novel testing device for multi-layer fracturing |
| CN203905917U (en) * | 2014-04-30 | 2014-10-29 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A layering measure commingling pipe column |
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| CN105672935A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Multidirectional pressure control type spraying, sealing and pressing device and pipe column comprising same |
| CN105888650A (en) * | 2016-04-15 | 2016-08-24 | 中国石油天然气股份有限公司 | Gas well storage type integrated layered production allocation pressure gauge |
| CN106593422A (en) * | 2016-12-01 | 2017-04-26 | 中国石油天然气股份有限公司 | Storage type test method and pipe column in horizontal well oil pipe |
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2018
- 2018-11-14 CN CN201811351272.0A patent/CN109372485B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4488599A (en) * | 1982-08-30 | 1984-12-18 | Exxon Production Research Co. | Method of controlling displacement of propping agent in fracturing treatments |
| US6315041B1 (en) * | 1999-04-15 | 2001-11-13 | Stephen L. Carlisle | Multi-zone isolation tool and method of stimulating and testing a subterranean well |
| CN200978672Y (en) * | 2006-10-17 | 2007-11-21 | 中国石油化工股份有限公司 | Downhole crack pressure monitoring instrument |
| CN203296767U (en) * | 2013-06-24 | 2013-11-20 | 北京金科龙石油技术开发有限公司 | Novel testing device for multi-layer fracturing |
| CN203905917U (en) * | 2014-04-30 | 2014-10-29 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A layering measure commingling pipe column |
| CN104453778A (en) * | 2014-11-06 | 2015-03-25 | 中国石油天然气股份有限公司 | Fracture sliding sleeve with dissoluble ball seat and fracturing method |
| CN105672935A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Multidirectional pressure control type spraying, sealing and pressing device and pipe column comprising same |
| CN105888650A (en) * | 2016-04-15 | 2016-08-24 | 中国石油天然气股份有限公司 | Gas well storage type integrated layered production allocation pressure gauge |
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