CN202467799U - Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion - Google Patents
Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion Download PDFInfo
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- CN202467799U CN202467799U CN2012201228789U CN201220122878U CN202467799U CN 202467799 U CN202467799 U CN 202467799U CN 2012201228789 U CN2012201228789 U CN 2012201228789U CN 201220122878 U CN201220122878 U CN 201220122878U CN 202467799 U CN202467799 U CN 202467799U
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- horizontal well
- plugging
- packer
- sieve tube
- water
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Abstract
The utility model relates to a profile control and water shutoff combination device for a thick oil horizontal well of a screen pipe completion. The combination device comprises a perforating system, a chemical plugging pipe column and a mechanical plugging pipe column which are sequentially and alternately fed into preset positions in the horizontal well of the screen pipe completion; the chemical plugging pipe column is sequentially formed by a first pipe plug, a first packer, a bursting pressure release valve and a second packer; an oil pipe with a corresponding length is connected between the first and second packers; the bursting pressure release valve is connected into the oil pipe between the first and second packers; the mechanical plugging pipe column is sequentially formed by a second pipe plug, a primary screen, a shearing check valve, a third packer and a fourth packer; and an oil pipe with the corresponding length is also connected between the third packer and the fourth packer. By a combination mode of carrying out chemical plugging outside a horizontal slotted screen and carrying out mechanical plugging inside the horizontal slotted screen, the water shutoff validity period is prolonged, the water shutoff effect of the screen pipe completion is improved, the well oil production capacity of the thick oil horizontal well which yields water is recovered and the problem of yielding water of the thick oil horizontal well of the existing screen pipe completion is solved.
Description
Technical field
The utility model is about the oil-water well profile control and water plugging device in a kind of petroleum production engineering field, relates in particular to a kind of thick oil horizontal well profile control and water plugging composite set of sieve tube completion.
Background technology
The water-plugging technology of oil well is an important technology of oil field development, and oil well can effectively reduce the invalid aquifer yield of oil well through water blockoff, increases well oil output, finally improves the oil well recovery ratio.China's this technology that begins one's study from the sixties in last century has formed comparatively ripe two types of water-plugging technologies of water pack off, chemical water shutoff at present.No matter be water pack off or chemical water shutoff, implementing main object still is the straight well of common completion mode, also can be the horizontal well of minority perforation or barefoot completion.But to horizontal well, the especially horizontal well of viscous crude sieve tube completion of sieve tube completion, inadaptability shutoff method and device preferably still at present, main cause is that the special construction by sieve tube completion limits.Can't cement the well between horizontal segment screen casing and the well; Formation fluid can be outside screen casing along screen casing axially have seepage flow; That is to say in the screen casing after the shutoff wet well section, the formation water of good flowing properties still can be outside screen casing seepage flow walk around the shutoff packer and get into screen casing again, water-plugging technology was lost efficacy.The completion screen casing generally is that width is the cutting seam sieve tube of 0.3-0.4mm simultaneously, and like this, the chemical plugging agent that particle diameter is big slightly is difficult to get into oil reservoir through screen casing.The heavy crude heat extraction horizontal well need be annotated high-temperature steam in addition, also requires corresponding water-plugging technology that higher temperature tolerance must be arranged, and has more increased the difficulty of the water plugging of horizontal well of viscous crude sieve tube completion.
Thus, the inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of thick oil horizontal well profile control and water plugging composite set of sieve tube completion, to overcome the defective of prior art.
The utility model content
The purpose of the utility model is to provide a kind of thick oil horizontal well profile control and water plugging composite set of sieve tube completion, is used to solve the problem of the thick oil horizontal well water outlet of present sieve tube completion.
The purpose of the utility model is to realize like this; A kind of thick oil horizontal well profile control and water plugging composite set of sieve tube completion, said profile control and water plugging composite set comprise perforating system, chemical plugging tubing string and the machine plugging tubing string that alternately is lowered to precalculated position in the sieve tube completion horizontal well successively;
Said chemical plugging tubing string order is made up of first plug, first packer, explosion relief valve and second packer, connects the oil pipe of respective length between two packers, and the explosion relief valve is connected in two oil pipes between the packer;
Said machine plugging tubing string order is made up of second plug, production screen, shear-type ball-and-seat, the 3rd packer and the 4th packer, also connects the oil pipe of respective length between the 3rd packer and the 4th packer.
In a preferred embodiments of the utility model, the screen casing in the thick oil horizontal well of said sieve tube completion is a cutting seam sieve tube, and the width of slot is 0.3mm～0.4mm.
In a preferred embodiments of the utility model, the precalculated position of corresponding horizontal well water outlet position interval on the said cutting seam sieve tube is by the perforating system perforation that at first is lowered in the horizontal well.
In a preferred embodiments of the utility model, the precalculated position seat envelope on the corresponding said cutting seam sieve tube of two packers of said chemical plugging tubing string, and block up agent by stifled agent of explosion relief valve output gel and particle and carry out chemical water shutoff.
In a preferred embodiments of the utility model, the particle diameter of the stifled agent of said particle is between Φ 1mm～2mm.
In a preferred embodiments of the utility model, the precalculated position seat envelope on the also corresponding said cutting seam sieve tube of two packers of said machine plugging tubing string, and give up and carry out machine plugging.
From the above mentioned; The thick oil horizontal well profile control and water plugging composite set of the utility model sieve tube completion; Compound mode through machine plugging in the shutoff of horizontal slot screen casing outer chemical, the horizontal slot screen casing has prolonged the water blockoff period of validity, has improved the sieve tube completion water plugging effect; Recover the thick oil horizontal well well oil productive capacity of water outlet, efficiently solved no effective water-plugging technology after the horizontal well water outlet of existing screen casing mode completion and practical problem that can only closing well.
Description of drawings
Following accompanying drawing only is intended to the utility model is done schematic illustration and explanation, does not limit the scope of the utility model.Wherein:
Fig. 1: be the structural representation of chemical plugging tubing string in the utility model.
Fig. 2: be the structural representation of machine plugging tubing string in the utility model.
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
The utility model proposes a kind of thick oil horizontal well profile control and water shutoff method of sieve tube completion, and this shutoff method may further comprise the steps at least:
(1) perforating system is delivered to the precalculated position of horizontal slot screen casing through oil pipe; Said precalculated position is the position of corresponding horizontal well water outlet position interval on the cutting seam sieve tube; By perforating system cutting seam sieve tube is carried out perforation;
(2) trip out perforating system; By oil pipe the chemical plugging tubing string is delivered to said precalculated position horizontal well water outlet position interval is carried out chemical water shutoff;
(3) trip out the chemical plugging tubing string; By oil pipe the machine plugging tubing string is delivered to said precalculated position horizontal well water outlet position interval is carried out machine plugging;
Like Fig. 1, shown in Figure 2; A kind of thick oil horizontal well profile control and water plugging composite set of sieve tube completion is provided in the utility model, and said profile control and water plugging composite set comprises perforating system (not shown), chemical plugging tubing string 1 and the machine plugging tubing string 2 that alternately is lowered to precalculated position in the sieve tube completion horizontal well successively;
As shown in Figure 1; Said chemical plugging tubing string 1 order adopts screwed connections to constitute by first plug 11, first packer 12, explosion relief valve 13 and second packer 14; Two packers 12, connect the oil pipe 15 of respective length between 14, explosion relief valve 14 is connected in two oil pipes 15 between the packer;
As shown in Figure 2, said machine plugging tubing string 2 orders are made up of second plug 21, production screen 22, shear-type ball-and-seat 23, the 3rd packer 24 and the 4th packer 25, also connect the oil pipe 26 of respective length between the 3rd packer 24 and the 4th packer 25.
Profile control and water shutoff method integrated use water pack off of the utility model and techniques of chemical water plugging advantage have adopted the method for administering simultaneously inside and outside the cutting seam sieve tube; At first adopt the perforation mode, inject oarse-grained stifled agent and carry out chemical plugging, improved the outer shutoff efficient of pipe, adopt the interior machine plugging technology of pipe to accomplish again and transfer deblocking technology; Solved the problem of the thick oil horizontal well water outlet of existing sieve tube completion thus.
Perforation is carried out to cutting seam sieve tube 3 in the precalculated position that at first perforating system is delivered to horizontal slot screen casing 3 through oil pipe; Confirm perforation length corresponding on the cutting seam sieve tube 3 according to horizontal well water outlet position physical length, the density of perforation is 8～16 hole/rice; The aperture of perforation is 8～10mm.
Trip out perforating system then, be lowered to the well section card envelope that chemical plugging tubing string 1 will penetrate out with Φ 73mm oil pipe, suppress 10MPa from oil pipe earlier and two packers 12,14 are accomplished set, the pressure that raises afterwards makes explosion relief valve 13 open pressure releases to 15MPa; At this moment can carry out the chemical water shutoff construction; Inject earlier the stifled agent of gel of a certain amount of polyacrylamide and carry out preparatory shutoff,, inject high-intensity bulky grain then and block up agent and carry out the deep shutoff especially to carrying out preparatory shutoff along the cutting seam sieve tube 3 axial outer seepage channels of pipe; The particle diameter of the stifled agent of particle requires to be controlled between Φ 1mm～2mm; And the width in cutting seam sieve tube 3 slits is 0.3mm～0.4mm, after stifled like this agent gets into oil reservoir from perforation, even any part of channelling to cutting seam sieve tube; Can not turn back to again in the cutting seam sieve tube yet, can stuck chemical plugging tubing string.The stifled agent of particle is squeezed into displacement fluid after injecting and finishing, and accomplishes cutting seam sieve tube outer chemical plugging technology.
Afterwards, trip out chemical plugging tubing string 1, be lowered to machine plugging tubing string 2, will change stifled well section card envelope with Φ 73mm oil pipe; The length and the chemical water shutoff well segment length of said two packers 24, the oil pipe 26 that connects between 25 are basic identical; Suppressing 10MPa from oil pipe sets two packers completion; Rising pressure is pinned the control of shear-type ball-and-seat 23 to 15MPa and is cut off; Valve ball and valve seat are fallen into second plug 21 places of production screen below 22; At this moment, shear-type ball-and-seat 23 forms by production screen 22 to the 23 unidirectional conductings of shear-type ball-and-seat.On carry oil pipe, machine plugging tubing string 2 is put aside in the 4th packer 25 upper ends, trip out the tubing string of giving up, accomplish machine plugging in the cutting seam sieve tube.Further after the machine plugging, can keep comparatively pressure stable in the block section in the cutting seam sieve tube, prevent that cutting seam sieve tube outer chemical sealing agent from returning to tell water blockoff was lost efficacy under the producing pressure differential effect, effectively anti-simultaneously sealing along the little position of choked flow ring set intensity single-point break through; Thus, prolonged the water blockoff period of validity, improved sieve tube completion thick oil horizontal well water plugging effect,, accomplished the thick oil horizontal well profile control and water plugging technology of sieve tube completion finally through the method for the inside and outside combination of this screen casing water blockoff.
From the above mentioned; The thick oil horizontal well profile control and water shutoff method of the utility model sieve tube completion is through the compound mode of machine plugging in the shutoff of horizontal slot screen casing outer chemical, the horizontal slot screen casing; Prolonged the water blockoff period of validity; Improve the sieve tube completion water plugging effect, recovered the thick oil horizontal well well oil productive capacity of water outlet, efficiently solved no effective water-plugging technology after the horizontal well water outlet of existing screen casing mode completion and practical problem that can only closing well.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (6)
1. the thick oil horizontal well profile control and water plugging composite set of a sieve tube completion, it is characterized in that: said profile control and water plugging composite set comprises perforating system, chemical plugging tubing string and the machine plugging tubing string that alternately is lowered to precalculated position in the sieve tube completion horizontal well successively;
Said chemical plugging tubing string order is made up of first plug, first packer, explosion relief valve and second packer, connects the oil pipe of respective length between two packers, and the explosion relief valve is connected in two oil pipes between the packer;
Said machine plugging tubing string order is made up of second plug, production screen, shear-type ball-and-seat, the 3rd packer and the 4th packer, also connects the oil pipe of respective length between the 3rd packer and the 4th packer.
2. the thick oil horizontal well profile control and water plugging composite set of sieve tube completion as claimed in claim 1, it is characterized in that: the screen casing in the thick oil horizontal well of said sieve tube completion is a cutting seam sieve tube, the width of slot is 0.3mm～0.4mm.
3. the thick oil horizontal well profile control and water plugging composite set of sieve tube completion as claimed in claim 2 is characterized in that: the precalculated position of corresponding horizontal well water outlet position interval on the said cutting seam sieve tube, and by the perforating system perforation that at first is lowered in the horizontal well.
4. the thick oil horizontal well profile control and water plugging composite set of sieve tube completion as claimed in claim 3; It is characterized in that: the precalculated position seat envelope on the corresponding said cutting seam sieve tube of two packers of said chemical plugging tubing string, and block up agent by stifled agent of explosion relief valve output gel and particle and carry out chemical water shutoff.
5. the thick oil horizontal well profile control and water plugging composite set of sieve tube completion as claimed in claim 4 is characterized in that: the particle diameter of the stifled agent of said particle is between Φ 1mm～2mm.
6. the thick oil horizontal well profile control and water plugging composite set of sieve tube completion as claimed in claim 3 is characterized in that: the precalculated position seat envelope on the also corresponding said cutting seam sieve tube of two packers of said machine plugging tubing string, and give up and carry out machine plugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201228789U CN202467799U (en) | 2012-03-28 | 2012-03-28 | Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201228789U CN202467799U (en) | 2012-03-28 | 2012-03-28 | Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion |
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| CN202467799U true CN202467799U (en) | 2012-10-03 |
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| CN2012201228789U Expired - Fee Related CN202467799U (en) | 2012-03-28 | 2012-03-28 | Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619493A (en) * | 2012-03-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Method and combination device for controlling profile and blocking water for thickened oil horizontal well of screen pipe well completion |
| CN108547591A (en) * | 2018-02-13 | 2018-09-18 | 中国石油天然气股份有限公司 | A kind of sieve tube completion thick oil horizontal well shutoff method |
| CN110924903A (en) * | 2019-12-06 | 2020-03-27 | 中国石油集团渤海钻探工程有限公司 | Selective plugging process pipe column for screen pipe well completion |
-
2012
- 2012-03-28 CN CN2012201228789U patent/CN202467799U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619493A (en) * | 2012-03-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Method and combination device for controlling profile and blocking water for thickened oil horizontal well of screen pipe well completion |
| CN108547591A (en) * | 2018-02-13 | 2018-09-18 | 中国石油天然气股份有限公司 | A kind of sieve tube completion thick oil horizontal well shutoff method |
| CN110924903A (en) * | 2019-12-06 | 2020-03-27 | 中国石油集团渤海钻探工程有限公司 | Selective plugging process pipe column for screen pipe well completion |
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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: 20121003 Termination date: 20210328 |