CN105178910A - Horizontal well water plugging process pipe column and method - Google Patents
Horizontal well water plugging process pipe column and method Download PDFInfo
- Publication number
- CN105178910A CN105178910A CN201510576654.3A CN201510576654A CN105178910A CN 105178910 A CN105178910 A CN 105178910A CN 201510576654 A CN201510576654 A CN 201510576654A CN 105178910 A CN105178910 A CN 105178910A
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- oil pipe
- type packer
- cannula type
- pipe
- intubate
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 235000020681 well water Nutrition 0.000 title abstract description 3
- 239000002349 well water Substances 0.000 title abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000002981 blocking agent Substances 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 238000005553 drilling Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 43
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a horizontal well water plugging process pipe column and a method, wherein the pipe column comprises an oil pipe, an elastic centralizer, a safety joint, a setting tool, an insertion pipe type packer and a rotatable bridge plug; the elastic centralizer and the safety joint are respectively sleeved at the tail end of the horizontal section of the oil pipe, the elastic centralizer is positioned at the left end of the safety joint, the horizontal section of the oil pipe is connected with the cannula type packer through a setting tool or a cannula, and the rotatable bridge plug is positioned at the right end of the cannula type packer and has a gap with the cannula type packer; the high-strength plugging agent sleeve has a simple structure, can realize the high-strength plugging agent with pressure waiting solidification, and can realize the retention of the plugging surface in the high-strength plugging agent sleeve of the horizontal well.
Description
Technical field
The invention belongs to field of petroleum exploitation, relate to a kind of the water plugging of horizontal well process pipe string and the method that are applied to oil field high pressure water outlet horizontal well old well use water blockoff.
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;
After waterflooding extraction pressure break horizontal well water breakthrough, water exit interval discharge pressure is high, water yield is large, conventional water shutoff pipe column has better compliance to low-intensity blocking agent, but low-intensity blocking agent shut-off capacity is limited, retention is poor, easily make blocking agent return after stifled to tell, shutoff success rate is low, weak effect, and returns the blocking agent spued and easily fracturing sand and reservoir landwaste are taken out of, cause pit shaft blocking, holddown, bit freezing etc., produce to the later stage and bring considerable influence.High strength blocking agent lacks special tubing string, and injection has a big risk, and easily causes down-hole string by the generation of the down-hole accidents such as consolidation, and is difficult to prevent blocking agent from returning and tells, and realizes time with pressure and coagulates.General use high strength blocking agent is carried out water plugging of horizontal well and was all used replacement mode, cannot realize staying the operation of plug face in sleeve pipe, affect plugging effect.
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 structure simple, high strength blocking agent time with pressure can be realized and coagulate, water plugging of horizontal well process pipe string and the method for staying plug face in horizontal well high strength blocking agent sleeve pipe can be realized.
In order to achieve the above object, the technical scheme that the present invention takes is: a kind of water plugging of horizontal well process pipe string, comprises an oil pipe, elastic centralizer, safety joint, setting tool, intubate, cannula type packer, turnable type bridging plug;
Described elastic centralizer and safety joint are set in the end of oil pipe horizontal segment respectively, and elastic centralizer is positioned at the left end of safety joint, described oil pipe horizontal segment is connected by setting tool or intubate with cannula type packer, described turnable type bridging plug is positioned at the right-hand member of cannula type packer, and has gap with cannula type packer.
A kind of water plugging of horizontal well process, described water plugging of horizontal well technique is carried out according to following steps:
Step one: use tubing transmission mode will to enter lower end, pre-block section under drilling bridging plug, and envelope is tested to it, guarantee that lower end packing is tight;
Step 2: by tubing string from the bottom to top according to oil pipe, elastic centralizer, safety joint, setting instrument, the order of cannula type packer connects, and down to target perforated interval top, avoids casing coupling;
Step 3: suppress from oil pipe, makes cannula type packer complete by setting instrument setting;
Step 4: slowly lower thrust t is applied to oil pipe, observe tubing string suspending weight, confirm that tubing string is without descending, i.e. cannula type packer set success, above carries oil pipe and trips out tubing string;
Step 5: under enter injection string with intubate, tubing string from the bottom to top according to oil pipe, elastic centralizer, safety joint, the order of intubate connects; In cannula type packer prefabricated before intubate is inserted, squeeze from oil pipe, observe sleeve pipe and whether return liquid, if return liquid to illustrate that intubate is not plugged, reinsert, if do not return liquid to illustrate that intubate sealing is intact, high strength blocking agent squeezing operation can be carried out;
Step 6: inject blocking agent from oil pipe, as plug face need be stayed, last displacement fluid consumption should be less than flow line volume, after injection, intubate extracted by upper lifting pipe post, and from sleeve pipe huge discharge reacting cycle pit shaft, until stop consistent with injection liquid in sleeve pipe of returning fluid is circulated in oil pipe, trip out injection string, and closing well is waited solidifying;
Step 7: wait coagulated after, under the tubing string entered with fishing tool cannula type packer is salvaged, completion
Also comprise a step 8, after cannula type packer being salvaged in step 7, can enter bore down mill tubing string as bottom interval needs to continue production brill is carried out to blocking agent plug face and drilling bridging plug remove, if do not needed to produce, can direct completion.
What described blocking agent adopted is, and CY-03 high strength water plugging profile control agent is mixed with mass percent concentration is 20% ~ 60% aqueous solution.
What described cannula type packer adopted is Y445-114 cannula type packer.
The present invention adopts above technical scheme, has the following advantages, and structure is simple, can realize high strength blocking agent time with pressure and coagulate, can realize staying plug face in horizontal well high strength blocking agent sleeve pipe.
Accompanying drawing explanation
Fig. 1: tubing string of the present invention suppresses structural representation;
Fig. 2: tubing string of the present invention injects the structural representation of blocking agent.
In figure: 1, elastic centralizer; 2, setting instrument; 3, cannula type packer; 4, drilling bridging plug; 5, safety joint; 6, oil pipe; 7, sleeve pipe; 8, intubate.
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 and Figure 2, a kind of water plugging of horizontal well process pipe string and method, a kind of water plugging of horizontal well process pipe string, comprises an oil pipe 6, elastic centralizer 1, safety joint 5, setting tool 2, intubate 8, cannula type packer 3, turnable type bridging plug 4;
Described elastic centralizer 1 and safety joint 5 are set in the end of oil pipe 6 horizontal segment respectively, and elastic centralizer 1 is positioned at the left end of safety joint 5, described oil pipe 6 horizontal segment is connected by setting tool 2 or intubate 8 with cannula type packer 3, described turnable type bridging plug 4 is positioned at the right-hand member of cannula type packer 3, and has gap with cannula type packer 3.
At work, first drilling bridging plug 4 is lowered into the lower end, pre-block section of sleeve pipe 7, and envelope is tested to it, guarantee that lower end packing is tight, then suppressing below tubing string in sleeve pipe 7 of being made up of oil pipe 6, elastic centralizer 1, safety joint 5, setting tool 2, cannula type packer 3, and down to target hole section top, avoid sleeve pipe 7 box cupling, and cannula type packer 3 and turnable type bridging plug 4 keep certain gap, then suppress from oil pipe 6, by setting instrument 2, cannula type packer 3 is completed setting; Slowly lower thrust 2t is applied to oil pipe, observe tubing string suspending weight, confirm that tubing string is without descending, i.e. the setting success of cannula type packer 3, above carry oil pipe 6 and trip out and suppress tubing string; Then the injection string be made up of oil pipe 6, elastic centralizer 1, safety joint 5, band intubate 8, cannula type packer 3 as shown in Figure 2, below is in sleeve pipe 7, in cannula type packer 3 prefabricated before intubate 8 is inserted, squeeze from oil pipe 6, observe sleeve pipe 7 and whether return liquid, if return liquid to illustrate that intubate 8 is not plugged, reinsert, if do not return liquid to illustrate that intubate 8 seals intact, high strength blocking agent squeezing operation can be carried out; High strength blocking agent is injected from oil pipe 6, as plug face need be stayed, last displacement fluid consumption should be less than oil pipe 6 volume, after injection, intubate 8 extracted by upper lifting pipe post, and from sleeve pipe 7 huge discharge reacting cycle pit shaft, can stop circulating until returning fluid is consistent with injection liquid in sleeve pipe 7 in oil pipe 6, trip out injection string, and closing well is waited solidifying; Wait coagulated after, under the tubing string entered with fishing tool cannula type packer 3 is salvaged; Can enter bore down mill tubing string as bottom interval needs to continue production brill is carried out to blocking agent plug face and drilling bridging plug 4 remove, if do not needed to produce, can direct completion, by describing above and can finding out, water plugging string structure in the present embodiment is simple, and high strength water shutoff agent time with pressure can be realized when in use coagulate, can realize staying plug face in horizontal well high strength blocking agent sleeve pipe.
Embodiment 2
A kind of water plugging of horizontal well process, described water plugging of horizontal well technique is carried out according to following steps:
Step one: use tubing transmission mode that drilling bridging plug is entered lower end, pre-block section for 4 times, and envelope is tested to it, guarantee that lower end packing is tight;
Step 2: by tubing string from the bottom to top according to oil pipe 6, elastic centralizer 1, safety joint 5, setting instrument 2, the order of cannula type packer 3 connects, and down to target perforated interval top, avoids sleeve pipe 7 box cupling;
Step 3: suppress from oil pipe 6, makes cannula type packer 3 complete by setting instrument 2 setting;
Step 4: slowly lower thrust 2t is applied to oil pipe 6, observe tubing string suspending weight, confirm that tubing string is without descending, i.e. the setting success of cannula type packer 3, above carries oil pipe 6 and trips out tubing string;
Step 5: under enter injection string with intubate 8, tubing string from the bottom to top according to oil pipe 6, elastic centralizer 1, safety joint 5, the order of intubate 8 connects; In cannula type packer 3 prefabricated before intubate 8 is inserted, squeeze from oil pipe 6, observe sleeve pipe 7 and whether return liquid, if return liquid to illustrate that intubate 8 is not plugged, reinsert, if do not return liquid to illustrate that intubate 8 seals intact, high strength blocking agent squeezing operation can be carried out;
Step 6: inject blocking agent from oil pipe 6, as plug face need be stayed, last displacement fluid consumption should be less than oil pipe 6 volume, after injection, intubate 8 extracted by upper lifting pipe post, and from sleeve pipe 7 huge discharge reacting cycle pit shaft, stop circulating until returning fluid is consistent with injection liquid in sleeve pipe 7 in oil pipe 6, trip out injection string, and closing well is waited solidifying;
Step 7: wait coagulated after, under the tubing string entered with fishing tool cannula type packer 3 is salvaged, completion;
Step 8, after salvaging cannula type packer 3 in step 7, can enter bore down mill tubing string and carry out brill to blocking agent plug face and drilling bridging plug 4 as bottom interval needs to continue production and remove, if do not needed to produce, and can directly completion be in fact.
Can be found out by the water plugging of horizontal well process in the present embodiment, the water-plugging technology method technique in the present embodiment is simple, can realize high strength water shutoff agent time with pressure and coagulate, can realize staying plug face in horizontal well high strength blocking agent sleeve pipe.
Embodiment 3
What described blocking agent adopted is, and CY-03 high strength water plugging profile control agent is mixed with mass percent concentration is 20% ~ 60% aqueous solution, and this water plugging profile control agent performance is:
| Project | Index |
| Outward appearance | Grey or grayish white powdery solid |
| Water-soluble | Form aqueous suspension, suspension can slowly sedimentation |
| Solid content (%) | ≥95 |
| PH value (30% aqueous solution) | 9~12 |
| Hardening time (30% aqueous solution) | Can plastic hardening time within the scope of 60 DEG C ~ 120 DEG C > (6 ~ 12) hour |
| Intensity | Compressive strength >=5.0Mpa erosion resistibility >=2.5Mpa/m |
The aqueous solution of this water plugging profile control agent solidifies under reservoir conditions, forms the netted complex of high strength; Production intensity blocking is produced to oil reservoir hole and crack, effectively can improve intake profile and the oil well liquid-producing section of water injection well, thus improve the sweep efficiency of water filling, improve the development effectiveness of oil reservoir.
Embodiment 4
What described cannula type packer 3 adopted is Y445-114 cannula type packer, Y445-114 insertion pipe packer is better than general retrievable insertion pipe packer and permanent type insertion pipe packer, its pressure-bearing is high, deblocking is convenient, together use with supporting intubate seal assembly, fisher, be applicable to the several work such as the shutoff of layer position, separate zone production, work limitation is long, simple to operate, cost-saving.
Elastic centralizer 1 in above-described embodiment, setting tool 2, drilling bridging plug 4, safety joint 5 are all the conventional tool of the art, are not here describing 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 (5)
1. a water plugging of horizontal well process pipe string, is characterized in that, comprises an oil pipe (6), elastic centralizer (1), safety joint (5), setting tool (2), intubate (8), cannula type packer (3), turnable type bridging plug (4);
Described elastic centralizer (1) and safety joint (5) are set in the end of oil pipe (6) horizontal segment respectively, and elastic centralizer (1) is positioned at the left end of safety joint (5), described oil pipe (6) horizontal segment is connected by setting tool (2) or intubate (8) with cannula type packer (3), described turnable type bridging plug (4) is positioned at the right-hand member of cannula type packer (3), and has gap with cannula type packer (3).
2. the process of a kind of water plugging of horizontal well process pipe string according to claim 1, is characterized in that, described water plugging of horizontal well technique is carried out according to following steps:
Step one: use tubing transmission mode to enter lower end, pre-block section by under drilling bridging plug (4), and envelope is tested to it, guarantee that lower end packing is tight;
Step 2: by tubing string from the bottom to top according to oil pipe (6), elastic centralizer (1), safety joint (5), setting instrument (2), the order of cannula type packer (3) connects, and down to target perforated interval top, avoids sleeve pipe (7) box cupling;
Step 3: suppress from oil pipe (6), makes cannula type packer (3) complete setting by setting instrument (2);
Step 4: slowly lower thrust 2t is applied to oil pipe (6), observe tubing string suspending weight, confirm that tubing string is without descending, i.e. cannula type packer (3) setting success, above carries oil pipe (6) and trips out tubing string;
Step 5: under enter injection string with intubate (8), tubing string from the bottom to top according to oil pipe (6), elastic centralizer (1), safety joint (5), the order of intubate (8) connects; In cannula type packer (3) prefabricated before intubate (8) is inserted, squeeze from oil pipe (6), observe sleeve pipe (7) and whether return liquid, if return liquid to illustrate that intubate (8) is not plugged, reinsert, if do not return liquid to illustrate that intubate (8) seals intact, high strength blocking agent squeezing operation can be carried out;
Step 6: inject blocking agent from oil pipe (6), as plug face need be stayed, last displacement fluid consumption should be less than oil pipe (6) volume, after injection, intubate (8) extracted by upper lifting pipe post, and from sleeve pipe (7) huge discharge reacting cycle pit shaft, until returning fluid circulates with consistent stopping of injection liquid in sleeve pipe (7) in oil pipe (6), trip out injection string, and closing well is waited solidifying;
Step 7: wait coagulated after, under the tubing string entered with fishing tool cannula type packer (3) is salvaged, completion.
3. a kind of water plugging of horizontal well process according to claim 2, it is characterized in that, also comprise a step 8, after cannula type packer (3) being salvaged in step 7, can enter bore down mill tubing string as bottom interval needs to continue production brill is carried out to blocking agent plug face and drilling bridging plug (4) remove, if do not needed to produce, can direct completion.
4. a kind of water plugging of horizontal well process according to claim 2, is characterized in that, what described blocking agent adopted is, and CY-03 high strength water plugging profile control agent is mixed with mass percent concentration is 20% ~ 60% aqueous solution.
5. a kind of water plugging of horizontal well process according to claim 2, is characterized in that, what described cannula type packer (3) adopted is Y445-114 cannula type packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576654.3A CN105178910A (en) | 2015-09-11 | 2015-09-11 | Horizontal well water plugging process pipe column and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576654.3A CN105178910A (en) | 2015-09-11 | 2015-09-11 | Horizontal well water plugging process pipe column and method |
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| CN105178910A true CN105178910A (en) | 2015-12-23 |
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| CN201510576654.3A Pending CN105178910A (en) | 2015-09-11 | 2015-09-11 | Horizontal well water plugging process pipe column and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108547589A (en) * | 2018-02-07 | 2018-09-18 | 中国石油集团西部钻探工程有限公司 | The electronic method for setting flow string under recyclable hanging packer no killing well |
| CN108979585A (en) * | 2018-07-27 | 2018-12-11 | 中国石油天然气股份有限公司 | Plugging method for oil field casing damage well casing breakage point |
| CN109630060A (en) * | 2018-11-05 | 2019-04-16 | 中国石油化工股份有限公司 | A kind of complete well operation tubing string of repeatable no killing well and construction technology |
| CN110984924A (en) * | 2019-12-20 | 2020-04-10 | 新疆恒智伟业石油工程技术开发有限公司 | Easy-drilling-and-grinding open hole well completion pipe string construction method |
| CN112682014A (en) * | 2020-12-30 | 2021-04-20 | 重庆万普隆能源技术有限公司 | Energy-compensating pipe column |
| CN112943152A (en) * | 2021-01-11 | 2021-06-11 | 中国石油天然气股份有限公司 | Water finding and water plugging integrated tubular column for oil field horizontal well and water finding and water plugging method thereof |
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| CN108547589A (en) * | 2018-02-07 | 2018-09-18 | 中国石油集团西部钻探工程有限公司 | The electronic method for setting flow string under recyclable hanging packer no killing well |
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| CN109630060B (en) * | 2018-11-05 | 2021-11-05 | 中国石油化工股份有限公司 | Repeatable non-killing well completion production string and construction method |
| CN110984924A (en) * | 2019-12-20 | 2020-04-10 | 新疆恒智伟业石油工程技术开发有限公司 | Easy-drilling-and-grinding open hole well completion pipe string construction method |
| CN112682014A (en) * | 2020-12-30 | 2021-04-20 | 重庆万普隆能源技术有限公司 | Energy-compensating pipe column |
| CN112943152A (en) * | 2021-01-11 | 2021-06-11 | 中国石油天然气股份有限公司 | Water finding and water plugging integrated tubular column for oil field horizontal well and water finding and water plugging method thereof |
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Application publication date: 20151223 |