CN205189776U - Prospecting's exploratory well's well bore structure - Google Patents
Prospecting's exploratory well's well bore structure Download PDFInfo
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- CN205189776U CN205189776U CN201520994339.8U CN201520994339U CN205189776U CN 205189776 U CN205189776 U CN 205189776U CN 201520994339 U CN201520994339 U CN 201520994339U CN 205189776 U CN205189776 U CN 205189776U
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- casing
- production string
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- pipe
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Abstract
The utility model provides a prospecting's exploratory well's well bore structure, include outside from the pipe that sets up in order to the center, surface casing, protective casing and production string post, stone and oil -well cement are packed with the annular space of the wall of a well to the pipe, surface casing outside of tubes oil -well cement returns height to ground, extend below the water under high pressure layer under the protective casing, protective casing outside of tubes oil -well cement returns high extremely 120 -130m more than the high -pressure water layer, extend below the main oil reservoir under the production string post, the outer oil -well cement of production string column jacket returns high extremely 100 -110m more than the main oil reservoir, the casing of surface casing top mounting sleeve head, protective casing and production string hang on the casing head, preventer and oil pipe head are connected to the casing head, still be equipped with two side mouths that are used for mending squeeze method and control hole condition on the casing head.
Description
Technical field
The utility model belongs to technical field of geological exploration, is specifically related to a kind of casing programme of prospect pit of geological prospecting, also relates to a kind of production string post.
Background technology
Geological prospecting is reconnoitred geology by various means, method, detected, determine suitable bearing stratum, according to the bearing capacity of foundation soil of bearing stratum, determine type of foundation, calculate the enquiry-based activity of underlying parameter, it is the mineral deposit finding that there is industrial significance in search for mineral deposit, for finding out the quality and quantity of mineral products, and the technical condition that exploitation utilizes, ore reserve required for mine construction designing and geologic information are provided, enquiry based work is carried out to geological conditions such as the rock in a given area, stratum, structure, mineral products, the hydrology, landforms.Probing is that thus reach the engineering construction engineering of wanted task, from boring, different depth obtains rock core, sample ore carries out analysis and research discriminating and find out ore body or division stratum, the operation of judgement stratum geological condition with drilling equipment from earth's surface to underground drilling and forming hole.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of casing programme of prospect pit of geological prospecting, provides condition for determining whether oil-gas reservoir exists and carry out evaluation to oil-gas reservoir.
In order to solve the problems of the technologies described above, the technical solution of the utility model is:
A kind of casing programme of prospect pit of geological prospecting, comprise the conduit arranged in turn from Wai Dao center, surface pipe, protective casing and production string post, the long 35m of conduit, the annular space of conduit and the borehole wall fills stone and oil well cement, the long 150m of surface pipe, the outer oil well cement of surface pipe pipe returns high to ground, below high pressure water layer is extended under protective casing, the outer oil well cement of protective casing pipe returns high to the above 120-130m of water under high pressure layer, below main oil reservoir is extended under production string post, the outer oil well cement of production string column jecket returns high to the above 100-110m of main oil reservoir, the housing of surface pipe top installation sleeve tube head, protective casing and production string are suspended on casing head, casing head connects preventer and tubing head, casing head is also provided with two side mouths for mending squeeze method and monitoring hole condition.
The casing programme of the prospect pit of above-mentioned geological prospecting, the substructure of production string post is guide shoe from below to up in turn, casing shoe, vortex sub, back-pressure valve and centralizer, guide shoe is divided into the section of being threaded and guide shoe body from top to bottom in turn, guide shoe body comprises inside wall and lateral wall, inside wall and lateral wall are the aluminium alloys plate body of convex-concave structure, circumferentially, be a recess between adjacent two protuberances, be a protuberance between adjacent two recesses, interlayer is formed between inside wall and lateral wall, two-layer above fiberglass gridding cloth is set in interlayer, these fiberglass gridding cloths are arranged at interval, thickness of interlayer direction, RPUF raw material is noted and bond after foaming slaking inside wall and lateral wall in interlayer, guide shoe body is divided into direct tube section and converging transition from top to bottom in turn, converging transition is small top and big bottom, the interior sidewall surface of converging transition and outer side surface are the semiellipse sphere on top, the major axis of the interior sidewall surface of converging transition and the major axis of outer side surface all overlap with the extended line of direct tube section axis, converging transition stamps out the fluid passage running through converging transition wall.
The casing programme of the prospect pit of above-mentioned geological prospecting, back-pressure valve comprises valve cylinder body, bakelite ball and cage, stretch on valve cylinder body wall and have inward flange, the upper surface of inward flange is arranged at intervals with annular groove, annular groove is multiple tracks, whole annular groove radially interval is arranged, annular groove has isosceles trapezoid cross section, the notch radial width of annular groove is greater than bottom land radial width, accordingly, the soffit of block ring is arranged at intervals with annular boss, annular boss is multiple tracks, whole annular boss radially interval is arranged, annular boss has isosceles trapezoid cross section, the lower end radial width of annular boss is less than upper end radial width, block ring is seated on inward flange, annular boss matches with annular groove, the periphery of block ring is provided with the circlip holding tank accommodating circlip, accordingly, valve cylinder body wall is provided with circlip holding tank, the axial limiting of block ring and valve cylinder body is realized when circlip is positioned at the circlip holding tank of the circlip holding tank of block ring and valve cylinder body wall simultaneously, clamp nut is positioned at above block ring, clamp nut has external screw thread and is threaded with valve cylinder body.
In order to prevent the ground surface soil slump of well bore position place, arrange conduit, another function of conduit drill bit can be guided to enter well and the drilling fluid returned up is caused specific region.Be provided with surface pipe, the outer oil well cement of surface pipe pipe returns high to ground, can Reinforcing Shaft.Extend below high pressure water layer under protective casing, the outer oil well cement of protective casing pipe returns high to the above 120-130m of water under high pressure layer, is completely cut off by high pressure water layer, also Reinforcing Shaft.Production string post provides circulation passage for painting.Whether this kind of casing programme can exist for determining oil-gas reservoir and carry out evaluation to oil-gas reservoir provides condition.
Accompanying drawing explanation
Below in conjunction with accompanying drawing to the further detailed description of the utility model:
Fig. 1 is the schematic diagram of casing programme.
Fig. 2 is the partial schematic diagram of Fig. 1.
Fig. 3 is the structural representation of guide shoe.
Fig. 4 is A-A profile in Fig. 3.
Fig. 5 is block ring and valve cylinder body junction structural representation.
Fig. 6 is the enlarged drawing marking 13 indication places in Fig. 5.
In figure: 1 stone and oil well cement, 2 conduits, 3 oil well cements, 4 surface pipes, 5 protective casings, 6 oil well cements, 7 inside walls, 8 interlayers, 9 lateral walls, 10 fiberglass gridding cloths, 11 valve cylinder body walls, 12 inward flanges, 14 block rings, 15 clamp nuts.
Detailed description of the invention
As shown in Figures 1 to 6, the casing programme of the prospect pit of geological prospecting comprises the conduit 2, surface pipe 4, protective casing 5 and the production string post that arrange in turn from Wai Dao center.The long 35m of conduit, the annular space of conduit and the borehole wall fills stone and oil well cement 1.The long 150m of surface pipe, the outer oil well cement 3 of surface pipe pipe returns high to ground.Extend below high pressure water layer under protective casing, the outer oil well cement 6 of protective casing pipe returns high to the above 120-130m of water under high pressure layer.Extend below main oil reservoir under production string post, the outer oil well cement of production string column jecket returns high to the above 100-110m of main oil reservoir.The housing of surface pipe top installation sleeve tube head, protective casing and production string are suspended on casing head, and casing head connects preventer and tubing head, casing head are also provided with two side mouths for mending squeeze method and monitoring hole condition.
The substructure of production string post is guide shoe (as Fig. 3 and Fig. 4), casing shoe, vortex sub, back-pressure valve (as Fig. 5 and Fig. 6) and centralizer from below to up in turn.Guide shoe is divided into the section of being threaded and guide shoe body from top to bottom in turn, guide shoe body comprises inside wall 7 and lateral wall 9, and inside wall and lateral wall are the aluminium alloys plate body of convex-concave structure, circumferentially, being a recess between adjacent two protuberances, is a protuberance between adjacent two recesses.Aluminium alloys plate body is convex-concave structure, improves the structural strength of aluminium alloys plate body, and during lower casing string, the voltage endurance capability of guide shoe is strong.Form interlayer 8 between inside wall and lateral wall, arrange two-layer above fiberglass gridding cloth 10 in interlayer, these fiberglass gridding cloths are arranged at interval, thickness of interlayer direction, are only layer of glass grid cloth in Fig. 4.RPUF raw material is noted and bond after foaming slaking inside wall and lateral wall in interlayer.Bond after RPUF raw material foaming slaking inside wall and lateral wall, make outboard sidewalls form an overall structure, fiberglass gridding cloth plays humidification, and the bulk strength of this structure is high, during lower casing string, the voltage endurance capability of guide shoe is strong, and good economy performance.Guide shoe body is divided into direct tube section and converging transition from top to bottom in turn, converging transition is small top and big bottom, the interior sidewall surface of converging transition and outer side surface are the semiellipse sphere on top, the major axis of the interior sidewall surface of converging transition and the major axis of outer side surface all overlap with the extended line of direct tube section axis, converging transition stamp out the fluid passage running through converging transition wall.The outer side surface of converging transition is the semiellipse sphere on top, farthest reduces the destruction of causing the borehole wall in lower production string post process, lower production string post is carried out smoothly.
In order to prevent mud from blowing back in production string post, back-pressure valve is set.Back-pressure valve comprises valve cylinder body, bakelite ball and cage, and stretching on valve cylinder body wall 11 has inward flange 12, and the upper surface of inward flange is arranged at intervals with annular groove, and annular groove is multiple tracks, and whole annular groove radially interval is arranged.Annular groove has isosceles trapezoid cross section, and the notch radial width of annular groove is greater than bottom land radial width.Accordingly, the soffit of block ring 14 is arranged at intervals with annular boss, annular boss is multiple tracks, and whole annular boss radially interval is arranged, and annular boss has isosceles trapezoid cross section, and the lower end radial width of annular boss is less than upper end radial width.Block ring is seated on inward flange, and annular boss matches with annular groove, and this cooperation defines hermetically-sealed construction, sealing is multiple-sealed, every one annular groove is all a seal structures with coordinating of annular boss, and sealing structure runnability is stablized, good sealing effect.The periphery of block ring is provided with circlip holding tank, this circlip holding tank accommodates circlip, accordingly, valve cylinder body wall is provided with circlip holding tank, the axial limiting of block ring and valve cylinder body is realized when circlip is positioned at the circlip holding tank of the circlip holding tank of block ring and valve cylinder body wall simultaneously, clamp nut 15 is positioned at above block ring, and clamp nut has external screw thread and is threaded with valve cylinder body, is pressed on inward flange by block ring.Block ring is used for support top cement plug.
Claims (3)
1. the casing programme of the prospect pit of a geological prospecting, it is characterized in that: comprise the conduit arranged in turn from Wai Dao center, surface pipe, protective casing and production string post, the long 35m of conduit, the annular space of conduit and the borehole wall fills stone and oil well cement, the long 150m of surface pipe, the outer oil well cement of surface pipe pipe returns high to ground, below high pressure water layer is extended under protective casing, the outer oil well cement of protective casing pipe returns high to the above 120-130m of water under high pressure layer, below main oil reservoir is extended under production string post, the outer oil well cement of production string column jecket returns high to the above 100-110m of main oil reservoir, the housing of surface pipe top installation sleeve tube head, protective casing and production string are suspended on casing head, casing head connects preventer and tubing head, casing head is also provided with two side mouths for mending squeeze method and monitoring hole condition.
2. the casing programme of the prospect pit of geological prospecting according to claim 1, it is characterized in that: the substructure of production string post is guide shoe from below to up in turn, casing shoe, vortex sub, back-pressure valve and centralizer, guide shoe is divided into the section of being threaded and guide shoe body from top to bottom in turn, guide shoe body comprises inside wall and lateral wall, inside wall and lateral wall are the aluminium alloys plate body of convex-concave structure, circumferentially, be a recess between adjacent two protuberances, be a protuberance between adjacent two recesses, interlayer is formed between inside wall and lateral wall, two-layer above fiberglass gridding cloth is set in interlayer, these fiberglass gridding cloths are arranged at interval, thickness of interlayer direction, RPUF raw material is noted and bond after foaming slaking inside wall and lateral wall in interlayer, guide shoe body is divided into direct tube section and converging transition from top to bottom in turn, converging transition is small top and big bottom, the interior sidewall surface of converging transition and outer side surface are the semiellipse sphere on top, the major axis of the interior sidewall surface of converging transition and the major axis of outer side surface all overlap with the extended line of direct tube section axis, converging transition stamps out the fluid passage running through converging transition wall.
3. the casing programme of the prospect pit of geological prospecting according to claim 2, it is characterized in that: back-pressure valve comprises valve cylinder body, bakelite ball and cage, stretch on valve cylinder body wall and have inward flange, the upper surface of inward flange is arranged at intervals with annular groove, annular groove is multiple tracks, whole annular groove radially interval is arranged, annular groove has isosceles trapezoid cross section, the notch radial width of annular groove is greater than bottom land radial width, accordingly, the soffit of block ring is arranged at intervals with annular boss, annular boss is multiple tracks, whole annular boss radially interval is arranged, annular boss has isosceles trapezoid cross section, the lower end radial width of annular boss is less than upper end radial width, block ring is seated on inward flange, annular boss matches with annular groove, the periphery of block ring is provided with the circlip holding tank accommodating circlip, accordingly, valve cylinder body wall is provided with circlip holding tank, the axial limiting of block ring and valve cylinder body is realized when circlip is positioned at the circlip holding tank of the circlip holding tank of block ring and valve cylinder body wall simultaneously, clamp nut is positioned at above block ring, clamp nut has external screw thread and is threaded with valve cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520994339.8U CN205189776U (en) | 2015-12-05 | 2015-12-05 | Prospecting's exploratory well's well bore structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520994339.8U CN205189776U (en) | 2015-12-05 | 2015-12-05 | Prospecting's exploratory well's well bore structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205189776U true CN205189776U (en) | 2016-04-27 |
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ID=55782776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520994339.8U Expired - Fee Related CN205189776U (en) | 2015-12-05 | 2015-12-05 | Prospecting's exploratory well's well bore structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205189776U (en) |
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2015
- 2015-12-05 CN CN201520994339.8U patent/CN205189776U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20160427 Termination date: 20181205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |