CN105178905A - Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells - Google Patents
Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells Download PDFInfo
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- CN105178905A CN105178905A CN201510576593.0A CN201510576593A CN105178905A CN 105178905 A CN105178905 A CN 105178905A CN 201510576593 A CN201510576593 A CN 201510576593A CN 105178905 A CN105178905 A CN 105178905A
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- packer
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- tubing string
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Abstract
The invention relates to a process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells. The tubing string comprises an oil tube, a bridge plug, a setting tool, a setting ball seat, a packer, a centralizer and a safety connector. One end of the oil tube is connected with the packer. The packer is connected with the setting tool through a tube nipple. The other end of the setting tool is connected with the bridge plug. The safety connector and the centralizer sleeve the end, close to the packer, of the oil tube. The centralizer is located between the safety connector and the packer. The setting ball seat presses in the tube nipple. Setting and sealing testing of the bridge plug can be finished in single drilling, construction period is shortened, and drill trip work is reduced.
Description
Technical field
The present invention relates to field of petroleum exploitation, be specifically related to a kind of bridge plug for horizontal well and set, test and alter integral process tubing string and method, can realize having bored setting and testing envelope of bridging plug for one time.
Background technology
Horizontal well production technology starts from the eighties in 20th century, is mainly used in improving oil and gas production and the rate of oil and gas recovery in oil field development.Along with the continuous intensification that development and the people of industrial technology are familiar with horizontal wells technology, receive extensive attention with horizontal well development oil field.Horizontal well is that hole angle reaches or close to 90 degree, well bore creeps into the well of certain length along horizontal direction.A kind of horizontal well tubing string that current horizontal well is as shown in Figure 1 conventional, it comprises peupendicular hole section 100 and net horizontal section 200.Described peupendicular hole section 100 is hole angle with the angle of described net horizontal section 200.Described peupendicular hole section 100 is provided with sleeve pipe, and described inside pipe casing is provided with the pumping pipe string for pumping.Described net horizontal section 200 is provided with screen casing, and one end that described screen casing is connected with described sleeve pipe is the heel position 202 of net horizontal section, and the other end that described screen casing gos deep into oil reservoir is the tiptoe position 203 of net horizontal section.Described screen casing is provided with sieve aperture 201, and it is inner that crude oil can enter into described screen casing by oil reservoir through described sieve aperture 201, when the crude oil in described screen casing enters into a certain amount of, then has the pumping pipe string in described sleeve pipe by described oil extraction to ground;
Preset bridging plug is in the wellbore needed in various old well operations, the general bridging plug of existence due to upper strata perforation sets and test envelope needs separate operation, namely enter and set to give up under a drilling tool carries out bridging plug, trip out this drilling tool, then under enter bridging plug with packer and test envelope drilling tool and carry out testing envelope.Due to separately operation, not only delay the duration, and add the workload that makes a trip.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of realization to bore setting and testing envelope of bridging plug for one time, be applicable to oilfield horizontal well, the old well bridging plug of directional well, permanent packer etc. and set, test and alter integral process tubing string and method.
In order to achieve the above object, the technical scheme that the present invention takes is: a kind of bridge plug for horizontal well sets, test and alter integral process tubing string, comprises oil pipe, bridging plug, setting tool, setting ball seat, packer, centralizer, safety joint;
One end of described oil pipe is connected with packer, described packer is connected by tubing nipple with setting tool, the other end of described setting tool is connected with bridging plug, described safety joint and centralizer are set in oil pipe on one end of packer, described centralizer is between safety joint and packer, and described setting ball seat is suppressed in tubing nipple.
Also be provided with choke valve in described tubing nipple, and this choke valve is positioned at the left end of setting ball seat.
Also be provided with expansion loop in described tubing nipple, and this expansion loop is positioned at the right-hand member of setting ball seat.
Described bridging plug replaces with permanent packer.
What described packer adopted is K344 type packer.
The chock pressure difference of described choke valve is greater than the setting pressure of packer.
A kind of bridge plug for horizontal well sets, tests and alter integrated technique, carries out according to following steps:
Step one: will by bridging plug, setting tool, expansion loop, setting ball seat, choke valve, packer, centralizer, the tubing string that safety joint, oil pipe, tubing nipple connect to form transfers to the target phase of sleeve pipe;
Step 2: carry oil pipe slowly and be installed to well head;
Step 3: the setting ball seat having steel ball from oil pipe dosing, and carry out pumping, continue to suppress after pressure increase to more than MPa, packer is set completely, continue to suppress to MPa, voltage stabilizing-minute, observe well head pressure, continue to suppress to MPa as pressure does not fall, after bridging plug is completely setting, voltage stabilizing-minute, pressure does not fall, and bridging plug sets intact, test involution lattice, otherwise it is defective to test envelope;
Step 4: from oil pipe release, removing seal for packer after oil pipe and casing pressure balance, above mentions drilling tool, namely completes whole bridging plug and set and test envelope step.
The present invention adopts above technical scheme, has the following advantages, and can realize having bored setting and testing envelope of bridging plug for one time, and saves the duration, decreases the workload that makes a trip.
Accompanying drawing explanation
Fig. 1: structural representation of the present invention.
In figure: 1, bridging plug; 2, setting tool; 3, expansion loop; 4, setting ball seat; 5, choke valve; 6, packer; 7, centralizer; 8, safety joint; 9, oil pipe; 10, sleeve pipe; 11, tubing nipple.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
As shown in Figure 1, a kind of bridge plug for horizontal well sets, test and alter integral process tubing string, comprises oil pipe 9, bridging plug (permanent packer) 1, setting tool 2, setting ball seat 4, packer 6, centralizer 7, safety joint 8;
One end of described oil pipe 10 is connected with packer 6, described packer 6 is connected by tubing nipple 11 with setting tool 2, the other end of described setting tool 2 is connected with bridging plug 1, described safety joint 8 and centralizer 7 are set in oil pipe 9 on one end of packer 6, described centralizer 7 is between safety joint 8 and packer 6, and described setting ball seat 4 is suppressed in tubing nipple 11.
At work, there is the setting ball seat 4 of steel ball from oil pipe 9 dosing, and carry out pumping, continue to suppress to more than 10MPa after pressure increase, packer 6 is set completely, continues to suppress to 15MPa, voltage stabilizing 5-10 minute, observe well head pressure, continue to suppress to 20MPa as pressure does not fall, after bridging plug 1 is completely setting, voltage stabilizing 5-10 minute, pressure does not fall, and bridging plug 1 sets intact, tests involution lattice, otherwise it is defective to test envelope; From oil pipe 9 release, packer 6 deblocking after oil pipe 9 and sleeve pipe 10 pressure balance, above mentions drilling tool, namely completes whole bridging plug and sets and test envelope step.Packer 6 pairs of bridging plugs or permanent packer 1 test envelope.
Embodiment 2
On the basis of embodiment 1, in described tubing nipple 11, be also provided with choke valve 5, and this choke valve 5 is positioned at the left end of setting ball seat 4; Also be provided with expansion loop 3 in described tubing nipple 11, and this expansion loop 3 is positioned at the right-hand member of setting ball seat 4.In the process of work, there is the setting ball seat 4 of steel ball from oil pipe 9 dosing, and carry out pumping, continue to suppress to more than 10MPa after pressure increase, packer 6 is set completely, continues to suppress to 15MPa, voltage stabilizing 5-10 minute, observe well head pressure, continue to suppress to 20MPa as pressure does not fall, after bridging plug 1 is completely setting, voltage stabilizing 5-10 minute, pressure does not fall, and bridging plug 1 sets intact, tests involution lattice, otherwise it is defective to test envelope; From oil pipe 9 release, packer 6 deblocking after oil pipe 9 and sleeve pipe 10 pressure balance, above mentions drilling tool, namely completes whole bridging plug and sets and test envelope step.Packer 6 pairs of bridging plugs or permanent packer 1 test envelope, and when suppressing in process, as pressure transient is regulated by the pressure in choke valve 5 pairs of tubing strings, expansion loop 3 is for compensating pressure.
Embodiment 3
On the basis of embodiment 1, what described packer 6 adopted is K344 type packer, the setting ball seat used 4 cores are destroyed pressure and are greater than and test seal pressure, in the process of work, the setting ball seat 4 of steel ball is had from oil pipe 9 dosing, and carry out pumping, continue to suppress to more than 10MPa after pressure increase, packer 6 is set completely, continue to suppress to 15MPa, voltage stabilizing 5-10 minute, observe well head pressure, continue to suppress to 20MPa as pressure does not fall, after bridging plug 1 is completely setting, voltage stabilizing 5-10 minute, pressure does not fall, and bridging plug 1 sets intact, test involution lattice, otherwise it is defective to test envelope, from oil pipe 9 release, packer 6 deblocking after oil pipe 9 and sleeve pipe 10 pressure balance, above mentions drilling tool, namely completes whole bridging plug and sets and test envelope step.Packer 6 pairs of bridging plugs or permanent packer 1 test envelope, in the process set, destroy pressure as setting ball seat 4 cores and be less than the pressure set, set do not complete time, the possibility that the seat core that just there will be setting ball seat 4 is struck off, choke valve 5 chock pressure difference is greater than packer 6 and sets pressure.
Embodiment 4
A kind of bridge plug for horizontal well sets, tests and alter integrated technique, carries out according to following steps:
Step one: will by bridging plug 1, setting tool 2, expansion loop 3, setting ball seat 4, choke valve 5, packer 6, centralizer 7, the tubing string that safety joint 8, oil pipe 9, tubing nipple 11 connect to form transfers to the target phase of sleeve pipe 10;
Step 2: carry oil pipe 9 slowly and be installed to well head;
Step 3: the setting ball seat 4 having steel ball from oil pipe 9 dosing, and carry out pumping, continue to suppress after pressure increase to more than 10MPa, packer 6 is set completely, continue to suppress to 15MPa, voltage stabilizing 5-10 minute, observe well head pressure, continue to suppress to 20MPa as pressure does not fall, after bridging plug 1 is completely setting, voltage stabilizing 5-10 minute, pressure does not fall, and bridging plug 1 sets intact, test involution lattice, otherwise it is defective to test envelope;
Step 4: from oil pipe 9 release, packer 6 deblocking after oil pipe 9 and sleeve pipe 10 pressure balance, above mentions drilling tool, namely completes whole bridging plug and sets and test envelope step.
In the above-described embodiments, described centralizer, setting tool, expansion loop, choke valve, safety joint, be all the common components of the art, here do not describe one by one.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (7)
1. bridge plug for horizontal well sets, tests and alter an integral process tubing string, it is characterized in that, comprises oil pipe (9), bridging plug (1), setting tool (2), setting ball seat (4), packer (6), centralizer (7), safety joint (8);
One end of described oil pipe (10) is connected with packer (6), described packer (6) is connected by tubing nipple (11) with setting tool (2), the other end of described setting tool (2) is connected with bridging plug (1), described safety joint (8) and centralizer (7) are set in oil pipe (9) on one end of packer (6), described centralizer (7) is positioned between safety joint (8) and packer (6), and described setting ball seat (4) is suppressed in tubing nipple (11).
2. a kind of bridge plug for horizontal well according to claim 1 sets, tests and alter integral process tubing string, it is characterized in that, be also provided with choke valve (5), and this choke valve (5) is positioned at the left end of setting ball seat (4) in described tubing nipple (11).
3. a kind of bridge plug for horizontal well according to claim 2 sets, tests and alter integral process tubing string, it is characterized in that, be also provided with expansion loop (3), and this expansion loop (3) is positioned at the right-hand member of setting ball seat (4) in described tubing nipple (11).
4. a kind of bridge plug for horizontal well according to claim 1 sets, tests and alter integral process tubing string, it is characterized in that, described bridging plug (1) replaces with permanent packer.
5. a kind of bridge plug for horizontal well according to claim 1 sets, tests and alter integral process tubing string, it is characterized in that, what described packer (6) adopted is K344 type packer.
6. a kind of bridge plug for horizontal well according to claim 2 sets, tests and alter integral process tubing string, it is characterized in that, the chock pressure difference of described choke valve (5) is greater than the setting pressure of packer (6).
7. bridge plug for horizontal well sets, tests and alter an integrated technique, it is characterized in that, carries out according to following steps:
Step one: will by bridging plug (1), setting tool (2), expansion loop (3), setting ball seat (4), choke valve (5), packer (6), centralizer (7), the tubing string that safety joint (8), oil pipe (9), tubing nipple (11) connect to form transfers to the target phase of sleeve pipe (10);
Step 2: carry oil pipe (9) slowly and be installed to well head;
Step 3: the setting ball seat (4) having steel ball from oil pipe (9) dosing, and carry out pumping, continue to suppress after pressure increase to more than 10MPa, packer (6) is set completely, continue to suppress to 15MPa, voltage stabilizing 5-10 minute, observe well head pressure, continue to suppress to 20MPa as pressure does not fall, after bridging plug (1) is completely setting, voltage stabilizing 5-10 minute, pressure does not fall, and bridging plug (1) sets intact, test involution lattice, otherwise it is defective to test envelope;
Step 4: from oil pipe (9) release, packer (6) deblocking after oil pipe (9) and sleeve pipe (10) pressure balance, above mentions drilling tool, namely completes whole bridging plug and sets and test envelope step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576593.0A CN105178905A (en) | 2015-09-11 | 2015-09-11 | Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576593.0A CN105178905A (en) | 2015-09-11 | 2015-09-11 | Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells |
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| CN105178905A true CN105178905A (en) | 2015-12-23 |
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| CN201510576593.0A Pending CN105178905A (en) | 2015-09-11 | 2015-09-11 | Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761710A (en) * | 2016-12-15 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of horizontal well and directional well set and test envelope integrated technique |
| CN107313767A (en) * | 2017-05-26 | 2017-11-03 | 中国石油天然气股份有限公司 | Tube-colume for seanching leakage area and its look for leakage process |
| CN113586017A (en) * | 2021-08-31 | 2021-11-02 | 中国石油天然气股份有限公司 | Perforating and sand-preventing integrated pipe column suitable for volcanic reservoir and using method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761710A (en) * | 2016-12-15 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of horizontal well and directional well set and test envelope integrated technique |
| CN107313767A (en) * | 2017-05-26 | 2017-11-03 | 中国石油天然气股份有限公司 | Tube-colume for seanching leakage area and its look for leakage process |
| CN107313767B (en) * | 2017-05-26 | 2021-07-02 | 中国石油天然气股份有限公司 | Leakage finding pipe column and leakage finding process method thereof |
| CN113586017A (en) * | 2021-08-31 | 2021-11-02 | 中国石油天然气股份有限公司 | Perforating and sand-preventing integrated pipe column suitable for volcanic reservoir and using method |
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Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |