CN204851081U - Middle part shut -in well pours into high temperature water under high pressure horizontal well completion pipe string of low -gravity liquid into - Google Patents
Middle part shut -in well pours into high temperature water under high pressure horizontal well completion pipe string of low -gravity liquid into Download PDFInfo
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- CN204851081U CN204851081U CN201520579717.6U CN201520579717U CN204851081U CN 204851081 U CN204851081 U CN 204851081U CN 201520579717 U CN201520579717 U CN 201520579717U CN 204851081 U CN204851081 U CN 204851081U
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- tubular column
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- pipe
- pit shaft
- shut
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Abstract
The utility model discloses a middle part shut -in well pours into high temperature water under high pressure horizontal well completion pipe string of low -gravity liquid into, including the pit shaft and lie in the bore hole horizontal segment of pit shaft below, its characterized in that includes still that upper portion completion pipe string, middle part shunt in a well tubular column and the pipe that punches temporarily and hang the tubular column, and tail pipe that the pipe that punches hung the tubular column upper end is hung and is hung the packer and alternate and fix in the lower port of pit shaft, its lower extreme be used for fixed with connect the horizontal tubular column in the bore hole horizontal segment, the lower extreme that the tubular column was shunt in a well at the middle part temporarily alternates in the pipe that punches hangs the last port of tubular column, and its upper end is sealed and is separated and fix in the pit shaft, the last port department at the pit shaft is hung to upper portion completion pipe string's upper end, and its lower extreme passes and hangs the packer and alternate the middle part and shunt in a well in the last port of tubular column temporarily, in the pit shaft and lie in the top that hangs the packer is equipped with the low -gravity completion fluid. The utility model discloses can realize annular space sleeve pipe corrosion protection, the production passageway is opened in direct pressurization after can going into the flow string under, realizes flowing back production.
Description
Technical field
The utility model belongs to marine HTHP horizontal well completion technique field, specifically refers to a kind of HTHP horizontal well completion tubular column.
Background technology
At present, HTHP horizontal well completion is all carried out in high specific gravity mud, and often completion enters coiled tubing under terminating rear needs and sprays operation clearly, and time cost is all longer, is unfavorable for reservoir protection; Another completion method of HTHP horizontal well enters formation isolation valves under being and carries out formation isolation, but more difficult owing to opening isolating valve inside usually high specific gravity mud, therefore causes normally producing.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of technology relevant for the various aspects of the present utility model be described and/or advocate, believe that this discussion content contributes to for reader with background's information, to be conducive to understanding various aspects of the present utility model better, therefore, should be appreciated that it is discuss to read these with this angle, instead of admit prior art.
Utility model content
The purpose of this utility model is that providing a kind of middle part to shunt in a well injects the HTHP horizontal well completion tubular column of low-gravity liquid, hp-ht well can be realized shunt in a well temporarily and replace into low-gravity completion fluid, top flow string can in completion fluid under enter, realize annular space casing corrosion protection; Under enter flow string after can open production passage by direct weighting, realize discharge opeing produce.
The purpose of this utility model is achieved through the following technical solutions:
Middle part shut-in well injects the HTHP horizontal well completion tubular column of low-gravity liquid, comprise pit shaft and be positioned at the bore hole horizontal segment below pit shaft, it is characterized in that, also comprise top completion tubular column, the interim Shut-in well tubular column in middle part and perforated pipe hang tubing string, the tail pipe extension hanging packer that described perforated pipe hangs tubing string upper end interts and is fixed in the lower port of pit shaft, perforated pipe hangs the lower end of tubing string in order to fix and the horizontal tubing string be connected in bore hole horizontal segment, the lower end of the interim Shut-in well tubular column in described middle part is interted in the upper port that perforated pipe hangs tubing string, the upper end of the interim Shut-in well tubular column in described middle part is by hanging packer packing and fix in the wellbore, described hanging packer is positioned at the top of pit shaft high specific gravity drilling fluid, the upper end of described top completion tubular column is hung at the upper port place of pit shaft by tubing hanger, the lower end of described top completion tubular column is punctured into through hanging packer in the upper port of the interim Shut-in well tubular column in middle part, in described pit shaft and the top being positioned at described hanging packer is provided with low-gravity completion fluid.
Further, described top completion tubular column includes described tubing hanger, oil pipe, safety valve, packer, seating nipple, perforated pipe and insertion location sealing, the upper end of described oil pipe is connected with tubing hanger, the lower end of oil pipe is connected with the upper end of perforated pipe by seating nipple, the lower end of perforated pipe is connected with insertion location sealing, packer is located at the periphery of oil pipe, and safety valve is located on oil pipe.
Further, the interim Shut-in well tubular column in described middle part is connected with guide shoe successively by hanging packer, variable buckle joint, seating nipple, hydraulic sliding sleeve, ceramic disk from top to bottom.
Further, described perforated pipe hangs that tubing string hangs hanging packer by tail pipe from top to bottom, blind pipe, perforated pipe are connected successively with guide shoe.
The utility model beneficial effect: the utility model, by providing HTHP horizontal well completion tubular column, can realize interim packing stratum in pit shaft, realizes lower flow string in low-gravity completion, realizes the protection of annular space casing corrosion; After all tubing strings are lowered into position simultaneously, just can pressurizeing open hydraulic sliding sleeve from ground, tubing string, in the connection on stratum, realizes discharge opeing immediately and produces.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is HTHP horizontal well completion tubular column schematic diagram.
In the drawings: I, top completion tubular column; II, the interim Shut-in well tubular column in middle part; III, perforated pipe hang tubing string; A, pit shaft; B, bore hole horizontal segment; C, low-gravity completion fluid, D, high specific gravity drilling fluid;
I1, tubing hanger; I2, oil pipe; I3, safety valve; I4, packer; I5, seating nipple; I6, perforated pipe; I7, insertion location sealing;
II1, hanging packer; II2, variable buckle joint; II3, seating nipple; II4, hydraulic sliding sleeve; II5, ceramic disk; II6, guide shoe;
III1, pipe hanger hanging packer; III2, blind pipe; III3, perforated pipe; III4, guide shoe.
Detailed description of the invention
The technical solution of the utility model is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
As shown in Figure 1, middle part shut-in well injects the HTHP horizontal well completion tubular column of low-gravity liquid, comprises pit shaft A and is positioned at the bore hole horizontal segment B below pit shaft A, also comprises top completion tubular column I, the interim Shut-in well tubular column II in middle part and perforated pipe and hangs tubing string III.
The tail pipe extension hanging packer III1 that described perforated pipe hangs tubing string III upper end interts and is fixed in the lower port of pit shaft A, and perforated pipe hangs the lower end of tubing string III in order to fixing and the horizontal tubing string be connected in bore hole horizontal segment.Concrete scheme is: perforated pipe hangs tubing string III and connected successively by tail pipe extension hanging packer III1, blind pipe III2, perforated pipe III3, guide shoe III4 from top to bottom.
The lower end of the interim Shut-in well tubular column II in described middle part is interted in the upper port that perforated pipe hangs tubing string III, the upper end of the interim Shut-in well tubular column II in described middle part is by hanging packer II1 packing and be fixed in pit shaft A, described hanging packer II1 is positioned at the top of pit shaft A high specific gravity drilling fluid D, and concrete scheme is: the interim Shut-in well tubular column II in described middle part is connected with guide shoe II6 successively by hanging packer II1, variable buckle joint II2, seating nipple II3, hydraulic sliding sleeve II4, ceramic disk II5 from top to bottom.
The upper end of described top completion tubular column I is hung at the upper port place of pit shaft A by tubing hanger I1, the lower end of described top completion tubular column I is punctured in the upper port of the interim Shut-in well tubular column II in middle part through hanging packer II1, in described pit shaft A and the top being positioned at described hanging packer II1 is provided with low-gravity completion fluid C.Concrete scheme is: described top completion tubular column I includes tubing hanger I1, oil pipe I2, safety valve I3, packer I4, seating nipple I5, perforated pipe I6 and inserts location sealing I7, the upper end of described oil pipe I2 is connected with tubing hanger I1, the lower end of oil pipe I2 is connected with the upper end of perforated pipe I6 by seating nipple I5, the lower end of perforated pipe I6 is connected with insertion location sealing I7, packer I4 is located at the periphery of oil pipe I2, and safety valve I3 is located on oil pipe I2.
The utility model provides a kind of Novel high-temperature high-pressure horizontal well completion tubular pile, realizes this tubing string completion and comprises the steps:
S1: in the D high specific gravity drilling fluid in pit shaft A, under enter perforated pipe and hang tubing string III to bore hole horizontal segment B;
S2: in the D high specific gravity drilling fluid in pit shaft A, under enter the interim Shut-in well tubular column II in middle part, and test envelope pressure testing qualified after, to replace into low-gravity completion fluid C, and negative pressure test passes;
S3: in C low-gravity completion fluid, under enter top completion tubular column I;
S4: opening the hydraulic sliding sleeve on the interim Shut-in well tubular column in middle part by just pressurizeing in tubing string, realizing gas well liquid loading (alternative scheme enters coiled tubing under being and opens ceramic disk).
Set forth a lot of detail in description above so that fully understand the utility model, but the utility model can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection domain.
In a word; although the utility model lists above-mentioned preferred embodiment; but should illustrate; although those skilled in the art can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present utility model, otherwise all should be included in protection domain of the present utility model.
Claims (4)
1. the HTHP horizontal well completion tubular column of a middle part shut-in well injection low-gravity liquid, comprise pit shaft and be positioned at the bore hole horizontal segment below pit shaft, it is characterized in that, also comprise top completion tubular column, the interim Shut-in well tubular column in middle part and perforated pipe hang tubing string, the tail pipe extension hanging packer that described perforated pipe hangs tubing string upper end interts and is fixed in the lower port of pit shaft, perforated pipe hangs the lower end of tubing string in order to fix and the horizontal tubing string be connected in bore hole horizontal segment, the lower end of the interim Shut-in well tubular column in described middle part is interted in the upper port that perforated pipe hangs tubing string, the upper end of the interim Shut-in well tubular column in described middle part is by hanging packer packing and fix in the wellbore, described hanging packer is positioned at the top of pit shaft high specific gravity drilling fluid, the upper end of described top completion tubular column is hung at the upper port place of pit shaft by tubing hanger, the lower end of described top completion tubular column is punctured into through hanging packer in the upper port of the interim Shut-in well tubular column in middle part, in described pit shaft and the top being positioned at described hanging packer is provided with low-gravity completion fluid.
2. middle part according to claim 1 shut-in well injects the HTHP horizontal well completion tubular column of low-gravity liquid, it is characterized in that: described top completion tubular column includes described tubing hanger, oil pipe, safety valve, packer, seating nipple, perforated pipe and insertion location sealing, the upper end of described oil pipe is connected with tubing hanger, the lower end of oil pipe is connected with the upper end of perforated pipe by seating nipple, the lower end of perforated pipe is connected with insertion location sealing, packer is located at the periphery of oil pipe, and safety valve is located on oil pipe.
3. middle part according to claim 1 shut-in well injects the HTHP horizontal well completion tubular column of low-gravity liquid, it is characterized in that: the interim Shut-in well tubular column in described middle part is connected with guide shoe successively by hanging packer, variable buckle joint, seating nipple, hydraulic sliding sleeve, ceramic disk from top to bottom.
4. middle part according to claim 1 shut-in well injects the HTHP horizontal well completion tubular column of low-gravity liquid, it is characterized in that: described perforated pipe hangs that tubing string hangs hanging packer by tail pipe from top to bottom, blind pipe, perforated pipe are connected successively with guide shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520579717.6U CN204851081U (en) | 2015-08-05 | 2015-08-05 | Middle part shut -in well pours into high temperature water under high pressure horizontal well completion pipe string of low -gravity liquid into |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520579717.6U CN204851081U (en) | 2015-08-05 | 2015-08-05 | Middle part shut -in well pours into high temperature water under high pressure horizontal well completion pipe string of low -gravity liquid into |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851081U true CN204851081U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520579717.6U Expired - Fee Related CN204851081U (en) | 2015-08-05 | 2015-08-05 | Middle part shut -in well pours into high temperature water under high pressure horizontal well completion pipe string of low -gravity liquid into |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134092A (en) * | 2015-08-05 | 2015-12-09 | 中国海洋石油总公司 | High temperature high pressure horizontal well completion pipe string with middle shut-in well injected with hypobarism liquid |
| CN112343556A (en) * | 2020-12-02 | 2021-02-09 | 中国海洋石油集团有限公司 | Offshore gas well coiled tubing flowing back tubular column |
-
2015
- 2015-08-05 CN CN201520579717.6U patent/CN204851081U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134092A (en) * | 2015-08-05 | 2015-12-09 | 中国海洋石油总公司 | High temperature high pressure horizontal well completion pipe string with middle shut-in well injected with hypobarism liquid |
| CN112343556A (en) * | 2020-12-02 | 2021-02-09 | 中国海洋石油集团有限公司 | Offshore gas well coiled tubing flowing back tubular column |
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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: 20151209 Termination date: 20170805 |