CN105464624A - Well completion method - Google Patents
Well completion method Download PDFInfo
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- CN105464624A CN105464624A CN201410436529.8A CN201410436529A CN105464624A CN 105464624 A CN105464624 A CN 105464624A CN 201410436529 A CN201410436529 A CN 201410436529A CN 105464624 A CN105464624 A CN 105464624A
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- assembly
- thimble assembly
- open
- thimble
- leather cup
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Abstract
The invention relates to a well completion method. The well completion method includes the steps: step 1, in a target stratum of a shield well, descending a third-section sleeve component to a target position of a well bottom; step 2, descending a second-section sleeve component to the end of the third-section sleeve component; step 3, descending a first-section sleeve component with a water pumping unit inside, and enabling the inner wall of the first-section sleeve component to be partially overlapped with the inner wall of the second-section sleeve component, wherein a leather cup packer with an inner diameter matched with that of the second-section sleeve component is arranged in the second-section sleeve component and used for partitioning the internal spaces of the first-section sleeve component and the second-section sleeve component and combining with the first-section sleeve component to form a heat insulation chamber; step 4, enabling communication of a water outlet end of the water pumping unit with a wellhead pump chamber component, and enabling communication of a water inlet end with the leather cup packer through a coupling component to form a fluid extraction passage. The well completion method has the advantages that heat loss of extracted geothermal water is effectively reduced, and the temperature of the extracted geothermal water is raised.
Description
Technical field
The present invention relates to the completion technique field of thermally insulating the borehole insulation, particularly relate to a kind of completion method.
Background technology
The well developed at present mainly adopts following two kinds of underground heat completion interval of well body structures: the first: at sandstone geothermal reservoir: the section of opening carries out setting of casing well cementation, the direct setting of casing of two sections of opening, and the part interval of only sealing one section of opening and two section of opening overlapping regions, three sections of opening hang screen casings or filter pipe water intaking; The second: at basement rock geothermal reservoir: the section of opening and the equal setting of casing well cementation of two sections of opening, three sections of opening are fetched water at Open-Hole Section.
The geothermal well casing programme difference of different reservoir type is 2 points: one be two sections of opening exist well cementation with do not cement the well different, two is at payzone section employing screen casing or the difference of barefoot completion.Common ground is then in the section of opening, and is pump chamber section.Pump chamber section must leave larger in latus rectum, the pump chamber section degree of depth is set to 500m usually.One section of opening adopts the big orifice steel pipe extending to well head for well cementation usually.
In above-mentioned geothermal well casing programme, mainly geothermal well Discharge rate is large for the feature of the section of opening (pump chamber section), and Discharge rate is generally 70m3/hrs, therefore, larger to the requirement of electric submersible pump discharge capacity.Geothermal well pump chamber pipe (oil pipe) is 150m according to scope dark under production capacity.The casing programme of underground heat completion of the prior art comprises electric submersible pump and pump chamber pipe (oil pipe).Described pump chamber pipe (oil pipe) adopts common steel tube, and adopting liquid place is pump chamber section.
Current thermally insulating the borehole technology is mainly used in thick oil thermal extraction.Can summarize and be divided into two classes: a class is that oil pipe is heat insulation, an other class is that sleeve pipe is heat insulation.No matter be that oil pipe is heat insulation or sleeve pipe is heat insulation, except oil pipe external diameter size is different with mode of occupation in oil gas well completion, other structure composition is basically identical.Be mainly: box cupling, sealing ring, heat insulation bushing pipe, outer tube, heat-barrier material and interior pipe.
Above-mentioned geothermal well, by the restriction of casing programme, while completion, cannot realize the object realizing reducing heat waste to the GEOTHERMAL WATER taked by insulation well.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of completion method.It comprises the steps:
Step 1: transfer three in the formation at target locations of structure well and open thimble assembly to target location, shaft bottom; Step 2: transfer two and open thimble assembly to described three ends of opening thimble assembly; Step 3: transfer inside and be provided with one of the unit that draws water and open thimble assembly, and it is overlapping wherein to make described one inwall and described two opening thimble assembly open the inner wall section of thimble assembly, in described two inside of opening thimble assembly, the leather cup packing device matched with its internal diameter is set, open in order to separate described one the inner space that thimble assembly opened by thimble assembly and described two, and open thimble assembly be combined to form moist closet with described one; Step 4: be connected with well head pump chamber assembly the water side of the described unit that draws water, water inlet end is connected with described leather cup packing device by box cupling assembly, gets liquid passage in order to be formed.
Preferably, described in the unit that draws water comprise envelope chamber assembly and be encapsulated in the pump assembly of described envelope chamber component internal, wherein, between described envelope chamber assembly and described pump assembly, there is seal cavity.Described pump assembly comprises electric submersible pump and is arranged on the floral tube assembly that the two ends of described electric submersible pump and periphery arrange many places through hole.
Preferably, described leather cup packing device comprises leather cup packer assembly and is arranged on the end of described leather cup packer assembly and has elastically-deformable guide shoe assembly, described guide shoe assembly outline is taper, enters in order to guide described leather cup packer assembly the inside that described two open thimble assembly smoothly.
Preferably, described leather cup packer assembly and described two opens the inwall of thimble assembly is interference fit.
Preferably, the external diameter of described leather cup packer assembly is 110mm to 200mm, the pressure of 5MPa to the 20MPa that can bear.
Preferably, described one outer wall opening thimble assembly is provided with well cementing of cement sleeve pipe, in order to the central axes making described one central axis and described two opening thimble assembly open thimble assembly, and makes described one to open thimble assembly firm position.
Preferably, described two open thimble assembly and described three, and to open the internal diameter of thimble assembly equal and open 0.5 times of the internal diameter of thimble assembly for described one, and described two open thimble assembly and described three contact positions opening thimble assembly are sealed by seal.
Preferably, the upper and lower end parts of described envelope chamber assembly respectively arranges an adapter assembly, in order to be connected with described well head pump chamber assembly and box cupling assembly respectively.
Preferably, the method arranges at least two described leather cup packer assemblies, and the spacing between described leather cup packer assembly is 200mm to 400mm.
According to the present invention, by carrying out collecting GEOTHERMAL WATER at two section of opening L2, effectively avoiding the heat-energy losses of geothermal energy at the section of opening a L1 big orifice place, improve the temperature of GEOTHERMAL WATER.Further, open the end Joint of thimble assembly by being arranged on a hanger and two opening the inwall of the end of thimble assembly, and open one the lap that thimble assembly and two opens thimble assembly leather cup packing device is set.
This leather cup packing device comprises cup packer and is arranged on the guide shoe of this cup packer bottom, and this guide shoe is in order to guide described cup packer to insert smoothly inside that described two open thimble assembly.Wherein, described cup packer is formed in order to coupled logical box cupling assembly and gets liquid passage, and opens thimble assembly form insulation layer with one, and then effectively decreases geothermal energy opens the big orifice place of thimble assembly heat waste one.Further, the geothermal water temperature by taking effectively is prevented to reduce and heat-energy losses by this insulation layer.
In addition, by respectively arranging a floral tube assembly and by its overall package in envelope chamber assembly to being arranged on a upper and lower side opening the electric submersible pump in thimble assembly, thus have effectively achieved and flowed through by the GEOTHERMAL WATER taked the box cupling assembly that opens thimble assembly inside.Afterwards, GEOTHERMAL WATER enters after flowing through box cupling assembly in the assembly of envelope chamber, and then, flow to the inside of the floral tube assembly be arranged in the assembly of envelope chamber.And be pumped to well head by the electric submersible pump be arranged in the assembly of envelope chamber.Therefore, what effectively reduce GEOTHERMAL WATER flows through sectional area, and by described insulation layer, achieves the heat-energy losses and the temperature that improve GEOTHERMAL WATER that reduce GEOTHERMAL WATER well.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.
Fig. 1 is the inside overall structure figure of the completion utilizing the method for completion of the present invention to be configured to.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the scaling of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
According to the present invention, the method for described completion comprises the steps.
Step 1: in the formation at target locations of structure well, transfers three and opens thimble assembly 14 (see Fig. 1) to target location, shaft bottom, and in the present invention, target location, described shaft bottom is geothermal reservoir 15 (see Fig. 1).
Step 2: transfer two and open thimble assembly 13 (see Fig. 1) to described three ends of opening thimble assembly 14, and open thimble assembly 13 described two seal 11 (see Fig. 1) is set with described three contact positions opening thimble assembly 14, open thimble assembly 13 and described three in order to make described two to open thimble assembly 14 and seal completely, avoid because contact position sealing does not reach effect and GEOTHERMAL WATER 12 is flowed out, thus, the water withdrawal reducing ground is greatly avoided; Be well-known to those skilled in the art owing to transferring different thimble assemblies at different intervals, therefore be not described in detail in this.
Step 3: transfer inside and be provided with one of the unit 3 (see Fig. 1) that draws water and open thimble assembly 6 (see Fig. 1), and it is overlapping to make described one inwall and described two opening thimble assembly 6 open the inner wall section of thimble assembly 13, namely the inner wall of end opening thimble assembly 6 due to described is provided with hanger 8 (see Fig. 1), in order to hang the end that described two open thimble assembly 13, and make two to open thimble assembly 13 to enter a part of space that described opens thimble assembly 6, wherein, in described two inside of opening thimble assembly 13, the leather cup packing device 9 matched with its internal diameter is set, the inner space that thimble assembly 13 opened by thimble assembly 6 and described two is opened in order to separate described one, and open thimble assembly 6 be combined to form moist closet with described one, the heat waste on ground is sent in order to reduce GEOTHERMAL WATER 12, and then effectively improve water intaking temperature.
Step 4: the water side of the described unit 3 that draws water is connected with the pump chamber assembly 2 (see Fig. 1) that well head 1 place is arranged, water inlet end is connected with described leather cup packing device 9 by box cupling assembly 4 (see Fig. 1), gets liquid passage in order to what form GEOTHERMAL WATER 12.
Refer to Fig. 1, it is the inside overall structure figure of completion of the present invention.As shown in the figure, according to the present invention, the inside overall structure of the completion 100 be configured to by utilizing the method for described completion comprises and is arranged on three of formation at target locations lowermost end and opens two of thimble assembly 14 and end disposed thereon and open thimble assembly 13.In the present invention, described formation at target locations is geothermal reservoir 15.Wherein, described three open thimble assembly 14 is sealed by seal 11 with described two contact positions opening thimble assembly 13, open in order to make described three the passage that the inside formation sealing of thimble assembly 13 opened by thimble assembly 14 and described two, thus effectively avoid because GEOTHERMAL WATER 12 flows out from described passage and reduce the hot water amount that hot water is collected on ground widely.
According to the present invention, in a preferred embodiment, open the upper end of thimble assembly 13 by two and be arranged on the below of well head 1, and inside is provided with the suspension assembly phase clamping that one of the unit 3 that draws water opens the inwall of thimble assembly 6.Wherein, in described one periphery of opening thimble assembly 6, well cementing of cement sleeve pipe 5 is set, in order to the central axes using described one central axis and described two opening thimble assembly 6 to open thimble assembly 13, and make described one to open thimble assembly 6 firm position, avoid the casing programme of whole completion 100 to affect the quality of completion 100 because of run-off the straight.In the present embodiment, described suspension assembly is hanger 8.According to the present invention, two open thimble assembly 13 and three, and to open the internal diameter of thimble assembly 14 equal and be out 0.5 times of the internal diameter of thimble assembly 6, larger seal cavity is formed in order to open described one between thimble assembly 6 and box cupling assembly 4, and heat-insulation and heat-preservation is carried out to the GEOTHERMAL WATER 12 flowed through in box cupling assembly 4, reduce the heat waste that this GEOTHERMAL WATER 12 is transported to ground.
In a preferred embodiment, the water side of the described unit 3 that draws water is connected with the well head pump chamber assembly 2 being arranged on well head 1 place, and the water inlet end of the described unit 3 that draws water is connected with described leather cup packing device 9 by box cupling assembly 4, get liquid passage in order to what form GEOTHERMAL WATER 12.In a preferred embodiment, the external diameter of box cupling assembly 4 is 4 inches.Wherein, the pump assembly 32 that the unit 3 that draws water described in comprises envelope chamber assembly 31 and is arranged in this assembly 31 inside, envelope chamber.Wherein, the upper and lower side of described envelope chamber assembly 31 respectively arranges an adapter assembly, in order to be connected with described well head pump chamber assembly 2 and described box cupling assembly 4 respectively, to be formed and gets liquid passage.Described pump assembly 32 has certain seal cavity with described envelope chamber assembly 31, and described seal cavity is in order to store the GEOTHERMAL WATER 12 taked.In a preferred embodiment of the invention, described pump assembly 32 comprises electric submersible pump 321 and is arranged on this electric submersible pump 321 upper and lower end parts and encloses the floral tube assembly 322 putting many places through hole outside.Floral tube assembly 322, in order to will flow to the GEOTHERMAL WATER 12 in envelope chamber assembly 31, flows through the many places through hole that is arranged on described floral tube assembly 322 and flows in the well head pump chamber assembly 2 be arranged on below well head 1, and then GEOTHERMAL WATER 12 is delivered to ground.
In a preferred embodiment, open the inwall of thimble assembly 13 described two, the leather cup packing device 9 matched with this inwall is set.Leather cup packing device 9 comprises leather cup packer assembly and is arranged on the guide shoe assembly 92 of bottom of this leather cup packer assembly.In the present embodiment, described leather cup packer assembly is cup packer 91.Can be there is certain elastic deformation in described guide shoe assembly 92, and overall outline is set to taper.The chamfering specification of guide shoe assembly 92 can be 5mm × 20mm.Therefore, guide shoe assembly 92 in order to guide cup packer 91 to enter smoothly inside that two open thimble assembly 13, thus is effectively separated one and is opened thimble assembly 6 and two and open between the inside of thimble assembly 13.Due to, described cup packer 91 is interference fit with described two inwalls opening thimble assembly 13, and therefore described cup packer 91 and described is opened thimble assembly 6 and formed moist closet, in order to reduce by the heat waste of the GEOTHERMAL WATER 12 collected.
In a preferred embodiment, the quantity of cup packer 91 is at least two, and external diameter size is less than the inner diameter size of thimble assembly usually.In a preferred embodiment, the external diametrical extent of cup packer 91 is 110mm to 200mm.If the diameter of cup packer 91 is too small, then match with it two to open the internal diameter of thimble assembly 13 less, then can make by the GEOTHERMAL WATER 12 collected because flow velocity is excessive, and damage cup packer 91.To making this cup packer 91 and two inwalls opening thimble assembly 13 produce gap, and GEOTHERMAL WATER 12 cannot be flow in box cupling assembly 4 smoothly.Therefore, the object of the heat waste reducing GEOTHERMAL WATER 12 cannot be reached.If the diameter of cup packer 91 is excessive, then match with it two internal diameters opening thimble assembly 13 are comparatively large, then can make by the GEOTHERMAL WATER 12 collected because flow velocity is too small, and cannot enter in box cupling assembly 4 through cup packer 91, cause and cannot take GEOTHERMAL WATER 12.
In a preferred embodiment, the spacing range between cup packer 91 is 200mm to 400mm in a preferred embodiment.Within the scope of this, effectively can avoid because one of them cup packer 91 and two sealings opened between thimble assembly 13 reduce, and cause the GEOTHERMAL WATER 12 be extracted cannot enter in envelope chamber assembly 3 completely, thus reduce the hot water Discharge rate of well head.Spacing in a preferred embodiment between cup packer 91 is 300mm.
In a preferred embodiment, the pressure limit that described cup packer 91 can bear is 5MPa to 20MPa.To act on the pressure on described cup packer 91 far beyond GEOTHERMAL WATER 12 due to described pressure limit, therefore, in whole water intaking process, can not make to take GEOTHERMAL WATER 12 because of the damage of cup packer 91, save the time of collecting GEOTHERMAL WATER 12 greatly, improve operating efficiency.
In a preferred embodiment, undertaken taking the course of work of GEOTHERMAL WATER 12 as follows by completion 100:
First, high power air blowers is connected with the unidirectional air pressure valve being arranged on well head 1 place, enters in box cupling assembly 4 through leather cup packing device 9 in order to GEOTHERMAL WATER 12 is opened unidirectional Annular cutting in thimble assembly 13 two.According to the present invention, the overlapping region of the water intaking Duan Weiyi section of opening L1 and two section of opening L2, effectively can avoid the heat-energy losses causing GEOTHERMAL WATER 12 because carrying out taking GEOTHERMAL WATER 12 at the section of an opening L1.
Secondly, owing to opening thimble assembly 6 and two overlay regions of opening thimble assembly 13 are provided with the cup packer 91 that bottom arranges guide shoe assembly 92 one in described completion 100, in addition, the well head pump chamber assembly 2 connected respectively due to unit 3 upper and lower side that draws water and the deadweight of box cupling assembly 4 effectively can overcome the upper top power produced it by the GEOTHERMAL WATER 12 taked, therefore, cup packer 91 inserts by guide shoe assembly 92 inside that two open thimble assembly 13 smoothly, thus, is formed and gets liquid passage.Further, cup packer 91 and is opened between thimble assembly 6 and is defined insulation layer.
Finally, in the GEOTHERMAL WATER 12 that the overlapping region of the section of an opening L1 and two section of opening L2 is taked, enter in box cupling assembly 4 via cup packer 91.GEOTHERMAL WATER 12 in box cupling assembly 4 flows in the envelope chamber assembly 31 of the unit 3 that draws water, and under the dynamic action that draws water of the electric submersible pump 321 drawn water in unit 3, the GEOTHERMAL WATER 12 in envelope chamber assembly 31 is flow to the inside of the floral tube assembly 322 being arranged on described electric submersible pump 321 upper and lower side.And then, flow through the pump chamber assembly 2 of setting below well head 1 and GEOTHERMAL WATER 12 is delivered to well head.But easy understand, the principle utilizing electric submersible pump 321 to carry out extracting GEOTHERMAL WATER 12 is well known to those skilled in the art, no longer describes in detail herein.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristic mentioned in each embodiment all can combine in any way.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. a completion method, it comprises the steps:
Step 1: transfer three in the formation at target locations of structure well and open thimble assembly to target location, shaft bottom;
Step 2: transfer two and open thimble assembly to described three ends of opening thimble assembly;
Step 3: transfer inside and be provided with one of the unit that draws water and open thimble assembly, and it is overlapping to make described one inwall and described two opening thimble assembly open the inner wall section of thimble assembly; Wherein, the leather cup packing device matched with its internal diameter is set in described two inside of opening thimble assembly, opens in order to separate described one the inner space that thimble assembly opened by thimble assembly and described two, and open thimble assembly be combined to form moist closet with described one;
Step 4: be connected with well head pump chamber assembly the water side of the described unit that draws water, water inlet end is connected with described leather cup packing device by box cupling assembly, gets liquid passage in order to be formed.
2. completion method according to claim 1, is characterized in that, described in the unit that draws water comprise envelope chamber assembly and be encapsulated in the pump assembly of described envelope chamber component internal, wherein, between described envelope chamber assembly and described pump assembly, there is seal cavity.
3. completion method according to claim 2, is characterized in that, described pump assembly comprises electric submersible pump and is arranged on the floral tube assembly that the two ends of described electric submersible pump and periphery arrange many places through hole.
4. the completion method according to Claims 2 or 3, it is characterized in that, described leather cup packing device comprises leather cup packer assembly and is arranged on the end of described leather cup packer assembly and has elastically-deformable guide shoe assembly, described guide shoe assembly outline is taper, enters in order to guide described leather cup packer assembly the inside that described two open thimble assembly smoothly.
5. completion method according to claim 4, is characterized in that, the inwall that described leather cup packer assembly and described two opens thimble assembly is interference fit.
6. the completion method according to claim 4 or 5, is characterized in that, the external diameter of described leather cup packer assembly is 110mm to 200mm, can bear the pressure of 5MPa to 20MPa.
7. completion method according to claim 1, it is characterized in that, described one outer wall opening thimble assembly is provided with well cementing of cement sleeve pipe, in order to the central axes making described one central axis and described two opening thimble assembly open thimble assembly, and makes described one to open thimble assembly firm position.
8. the completion method according to claim 1 or 7, it is characterized in that, described two open thimble assembly and described three, and to open the internal diameter of thimble assembly equal and open 0.5 times of the internal diameter of thimble assembly for described one, and described two open thimble assembly and described three contact positions opening thimble assembly are sealed by seal.
9. the completion method according to any one of claim 2 to 5, is characterized in that, the upper and lower end parts of described envelope chamber assembly respectively arranges an adapter assembly, in order to be connected with described well head pump chamber assembly and box cupling assembly respectively.
10. the completion method according to any one of claim 4 to 6, is characterized in that, the method arranges at least two described leather cup packer assemblies, and the spacing between described leather cup packer assembly is 200mm to 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436529.8A CN105464624A (en) | 2014-08-29 | 2014-08-29 | Well completion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436529.8A CN105464624A (en) | 2014-08-29 | 2014-08-29 | Well completion method |
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| CN105464624A true CN105464624A (en) | 2016-04-06 |
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| CN201410436529.8A Pending CN105464624A (en) | 2014-08-29 | 2014-08-29 | Well completion method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240211A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil gas water well orients acid fracturing method |
| CN110905477A (en) * | 2019-11-27 | 2020-03-24 | 赵景海 | Oil well structure with double well completion pipe columns and well completion method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3314689C1 (en) * | 1983-04-22 | 1984-04-19 | Alfred 7440 Nürtingen Waldner | Device for sinking a terrestrial-heat-collector probe in the earth |
| CN1055218A (en) * | 1990-02-22 | 1991-10-09 | 安吉马奇·彼里 | A kind of equipment for completion of well |
| JPH07280361A (en) * | 1994-04-05 | 1995-10-27 | Fujikura Ltd | Heat pipe type geothermal heat extractor |
| JPH094358A (en) * | 1995-06-22 | 1997-01-07 | Akema Boring:Kk | Hot spring water heating method and hot spring water pumping device |
| CN1149902A (en) * | 1994-05-25 | 1997-05-14 | 若克斯韦尔国际有限公司 | Double walled insulated tubing and method for installing same |
| JPH09317371A (en) * | 1996-05-31 | 1997-12-09 | Akema Boring:Kk | Hot-spring water pumping-up device |
| JPH10292766A (en) * | 1997-04-16 | 1998-11-04 | Shuzo Watanabe | Pumping-up method of hot water of hot spring |
| CN102383762A (en) * | 2011-11-03 | 2012-03-21 | 王凯一 | Geothermal heat-insulating system and geothermal heat-insulating method for pit shaft |
| CN103090571A (en) * | 2013-01-06 | 2013-05-08 | 姚亚明 | Method of circular mining geothermal resources |
-
2014
- 2014-08-29 CN CN201410436529.8A patent/CN105464624A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3314689C1 (en) * | 1983-04-22 | 1984-04-19 | Alfred 7440 Nürtingen Waldner | Device for sinking a terrestrial-heat-collector probe in the earth |
| CN1055218A (en) * | 1990-02-22 | 1991-10-09 | 安吉马奇·彼里 | A kind of equipment for completion of well |
| JPH07280361A (en) * | 1994-04-05 | 1995-10-27 | Fujikura Ltd | Heat pipe type geothermal heat extractor |
| CN1149902A (en) * | 1994-05-25 | 1997-05-14 | 若克斯韦尔国际有限公司 | Double walled insulated tubing and method for installing same |
| JPH094358A (en) * | 1995-06-22 | 1997-01-07 | Akema Boring:Kk | Hot spring water heating method and hot spring water pumping device |
| JPH09317371A (en) * | 1996-05-31 | 1997-12-09 | Akema Boring:Kk | Hot-spring water pumping-up device |
| JPH10292766A (en) * | 1997-04-16 | 1998-11-04 | Shuzo Watanabe | Pumping-up method of hot water of hot spring |
| CN102383762A (en) * | 2011-11-03 | 2012-03-21 | 王凯一 | Geothermal heat-insulating system and geothermal heat-insulating method for pit shaft |
| CN103090571A (en) * | 2013-01-06 | 2013-05-08 | 姚亚明 | Method of circular mining geothermal resources |
Non-Patent Citations (1)
| Title |
|---|
| 曾义金 主编: "《石油工程新技术青年论坛论文集》", 30 June 2014 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240211A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil gas water well orients acid fracturing method |
| CN110905477A (en) * | 2019-11-27 | 2020-03-24 | 赵景海 | Oil well structure with double well completion pipe columns and well completion method thereof |
| CN110905477B (en) * | 2019-11-27 | 2021-09-07 | 赵景海 | Oil well structure with double well completion pipe columns and well completion method thereof |
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Application publication date: 20160406 |