CN102562016A - Heavy oil thermal recovery process - Google Patents
Heavy oil thermal recovery process Download PDFInfo
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- CN102562016A CN102562016A CN2012100216670A CN201210021667A CN102562016A CN 102562016 A CN102562016 A CN 102562016A CN 2012100216670 A CN2012100216670 A CN 2012100216670A CN 201210021667 A CN201210021667 A CN 201210021667A CN 102562016 A CN102562016 A CN 102562016A
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- extraction process
- heavy crude
- steam injection
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- 238000011084 recovery Methods 0.000 title abstract description 5
- 239000000295 fuel oil Substances 0.000 title abstract 3
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 44
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- 238000000034 method Methods 0.000 claims abstract description 21
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- 239000010410 layer Substances 0.000 claims description 20
- 239000003129 oil well Substances 0.000 claims description 20
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- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- 239000011229 interlayer Substances 0.000 claims description 7
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Abstract
The invention provides a heavy oil thermal recovery process method. The heavy oil thermal recovery process method comprises the following steps: completing a casing above an oil reservoir with an insulated casing, the insulated casing comprising: the heat insulation pipe comprises an inner pipe, an outer pipe sleeved outside the inner pipe, a heat insulation material clamped between the inner pipe and the outer pipe, and a coupling sleeved at one end of the outer pipe. The invention realizes the dynamic adjustment of the layered steam drive steam distribution amount through wellhead adjustment under the well completion condition of the vacuum heat insulation casing, simplifies the construction process, reduces the cost and improves the controllability of steam injection.
Description
Technical field
The present invention relates to the DP technology field, belong in a kind of thickened oil recovery, under vacuum heat-insulation sleeve pipe completion condition, implement layering vapour and drive technology, in particular to a kind of heavy crude heat extraction process.
Background technology
Existing heavy crude heat extraction oil well all is with ordinary casing (that is: non-thermal sleeve) completion, in ordinary casing, is lowered to insulated tubing and annotates vapour, and this technology needs operation to change tubing string when notes are adopted conversion, so the work operations amount is big.Also have, prior art is measured the temperature of oil jacket annular space when annotating vapour, can't directly react near the data of oil reservoir position or oil reservoir, and vapour is annotated in influence.
Use eccentric type layering vapour to drive technology; Though can join the adjustment of vapour amount according to the test result fixed tubular column; But adjustment is joined the vapour amount and need be descended special-purpose pulling and running tool that steam distributing valve is reaped on the ground to change; And then the steam distributing valve that will more finish changing is shipped to the down-hole, thereby test, pulling workload are big, and cost is high, the replacing time is long, efficient is low.
In addition, no matter adopt above-mentioned existing which kind of notes way of steam, in steam-injected well, when the steam in jection temperature surpassed 200 ℃, sleeve pipe expanded by heating and cooling were shunk the thermal stress damage that produces sleeve pipe and oil well are caused bigger infringement.
Summary of the invention
The present invention provides a kind of heavy crude heat extraction process and a kind of completion structure, can not directly react near the data oil reservoir position or the oil reservoir to solve existing thermometric, and vapour is annotated in influence.Secondly also to solve the problem of existing notes way of steam to the infringement of sleeve pipe and the outer cement sheath of sleeve pipe.In addition, when the present invention also will solve layer steam injection, the pulling workload was big, cost is high, the replacing time long, inefficient problem.
For this reason; The present invention proposes a kind of heavy crude heat extraction process; Said heavy crude heat extraction process comprises: production string is set above the oil reservoir in oil well; Adopt thermal sleeve to carry out completion the production string more than the oil reservoir in the oil well; Said thermal sleeve comprises: interior pipe, be socketed in said in outside the pipe outer tube, be folded in said in heat-barrier material and the box cupling that is set in said outer tube one end between pipe and the said outer tube, said heavy crude heat extraction process also comprises: binding is lowered to hollow stem said thermal sleeve outside, in steam injection process, in hollow stem, to be lowered to the temperature of the said thermal sleeve outer wall of test optical fiber steam injection process.
Further, said thermal sleeve is 5
1/
2" vacuum heat-insulation sleeve pipe.The specification of pipe and said outer tube is respectively φ 114.3mm * 6.35mm, φ 139.7mm * 7.72mm in said, box cupling external diameter φ 154mm, and pipe applies the different thermal stretching amounts that prestressed method compensates interior pipe and outer tube in the said employing.
Further, said testing tube is a hollow stem, and said hollow stem together is lowered in company with thermal sleeve, in said hollow stem, is lowered to optical fiber in the steam injection process to test.Fill diesel oil in the said hollow stem.
Further, said heavy crude heat extraction process also comprises: annotate vapour through direct steam injection in said thermal sleeve with individual layer in oil well.Be implemented in directly steam injection in said thermal sleeve of well head through the head valve group.
Further; Oil reservoir comprises at least: upper strata oil reservoir and lower floor's oil reservoir; Said heavy crude heat extraction process also comprises: layer steam injection in oil well; Said layer steam injection comprises: in said thermal sleeve, be lowered to plain tubing to said lower floor oil reservoir; To the oil reservoir steam injection of said upper strata, regulate notes vapour amount to said upper strata oil reservoir steam injection through the head valve group through the oil jacket annular space between said thermal sleeve and the said plain tubing, the inner chamber through said plain tubing is to the oil reservoir steam injection of said lower floor.
Further, the below of said plain tubing is connected with telescoping tube in turn, interlayer vapour drives packer, screen casing or horn mouth, and said layer steam injection also comprises: regulate the notes vapour amount to the oil reservoir steam injection of said lower floor through the head valve group.
Further, plain tubing is of a size of 2
7/
8".
The present invention also proposes a kind of completion structure; The sleeve pipe of said completion structure comprises: sleeve pipe; The sleeve pipe of said completion structure comprises thermal sleeve; Said thermal sleeve is positioned at more than the oil reservoir, and said thermal sleeve comprises: interior pipe, be socketed in said in outside the pipe outer tube, be folded in said in heat-barrier material and the box cupling that is set in said outer tube one end between pipe and the said outer tube.
Further; The sleeve pipe of said completion structure also comprises: be positioned at the surface pipe on the said thermal sleeve; And the production string that is positioned at the oil reservoir position under the said thermal sleeve, said surface pipe is external diameter φ 273.05mm, grade of steel J55 surface pipe, said production string is the APIN80 steel-grade bushing; Specification is φ 114.3mm * 6.35mm, and said thermal sleeve is 5
1/
2" vacuum heat-insulation sleeve pipe, the specification of said interior pipe and said outer tube is respectively φ 114.3mm * 6.35mm, φ 139.7mm * 7.72mm, box cupling external diameter φ 154mm.
Prior art is used for measuring the temperature of oil jacket annular space; Can't directly react near the data of oil reservoir position or oil reservoir; Just the indirect reaction oil reservoir is annotated the effect of vapour, certainly exists than big difference with near oil reservoir position or the oil reservoir truth, and the present invention is lowered to temperature or the mass dryness fraction that testing tube is measured sleeve outer wall; Directly obtain the data of oil reservoir position or oil reservoir vicinity, more can react the effect that oil reservoir is annotated vapour really and accurately.
The present invention adopts thermal sleeve to carry out completion the sleeve pipe more than the oil reservoir; Thereby when injecting high-temperature steam; Thermal sleeve can effectively stop expanding with heat and contract with cold to the outer cement sheath of sleeve pipe and to the infringement of sleeve pipe itself of steam; Protect cement sheath and sleeve pipe itself, protected oil well, reduced workover treatment.
In addition, the present invention is in the vacuum heat-insulation sleeve pipe lower going-into-well, when individual layer is annotated the upper strata oil reservoir layer steam injection of vapour or multilayer oil reservoir, can directly carry out steam and inject in the thermal sleeve, changed the notes way of steam of traditional sleeve pipe+instlated tubular.From the oil jacket annular space between sleeve pipe and the plain tubing upper strata oil reservoir is annotated vapour, and annotate vapour and rely on packer to realize that layering vapour drives, and has increased this notes vapour passage of oil jacket annular space between sleeve pipe and the plain tubing to lower floor's oil reservoir from plain tubing; Thereby the notes vapour that makes each oil reservoir relies on the notes vapour passage in the oil pipe no longer fully; Can make single notes vapour passage is set in the oil pipe gets final product, need not to regulate and annotate vapour, dynamically adjust joining the vapour amount through regulating at well head in the down-hole; Need not pulling work; Simplified thermal recovery technology, reduced cost, improved annotate vapour can be handling.
Description of drawings
Fig. 1 is the structure of oil well sketch map according to the embodiment of the invention;
Fig. 2 is the structure according to the thermal sleeve of the embodiment of the invention;
Fig. 3 is the working state schematic representation when annotating vapour according to the oil well of the embodiment of the invention.
The drawing reference numeral explanation:
10, well 20, surface pipe 30, thermal sleeve 31, box cupling 32, outer tube 33, interior pipe 34, heat-barrier material 40, hollow stem 50, oil reservoir 51, upper strata oil reservoir 53, lower floor's oil reservoir 60, production string 70, plain tubing 80, telescoping tube 90, interlayer vapour drive packer 95, horn mouth
The specific embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast the description of drawings specific embodiment of the present invention at present.
As shown in Figure 1, the present invention proposes a kind of completion structure of oil well, and in this completion structure, the sleeve pipe of oil well comprises thermal sleeve 30, and said thermal sleeve is positioned at oil reservoir more than 50, and the degree of depth can reach hundreds of rice under the lower going-into-well, for example can reach seven or eight hundred meters.According to this oil well, the present invention proposes a kind of heavy crude heat extraction process, and said heavy crude heat extraction process comprises: adopt thermal sleeve 30 to carry out completion the sleeve pipe of oil reservoir more than 50.The present invention adopts thermal sleeve to carry out completion the sleeve pipe more than the oil reservoir; Thereby when injecting high-temperature steam; Thermal sleeve can effectively stop expanding with heat and contract with cold to the outer cement sheath of sleeve pipe and to the infringement of sleeve pipe itself of steam; Protect cement sheath and sleeve pipe itself, protected oil well, reduced well workover and maintenance.
Further; As shown in Figure 1, the sleeve pipe of said oil well also comprises: be positioned at the surface pipe 20 on the said thermal sleeve 30, and be positioned at the production string 60 under the said thermal sleeve; Said surface pipe is the surface pipe of external diameter φ 273.05mm, grade of steel J55; Said production string is the APIN80 steel-grade bushing, and specification is φ 114.3mm * 6.35mm, and said thermal sleeve is 5
1/
2" vacuum heat-insulation sleeve pipe.Can connect through hanger between the sleeve pipes at different levels, certainly, thermal sleeve 30 also can extend to below the oil reservoir, and production string also can use thermal sleeve 30 in other words.
As shown in Figure 2; Said thermal sleeve 30 comprises: interior pipe 33, be socketed in said in outside the pipe 33 outer tube 32, be folded in said in heat-barrier material 34 and the box cupling 31 that is set in said outer tube one end between pipe and the said outer tube; The specification of pipe and said outer tube is respectively φ 114.3mm * 6.35mm, φ 139.7mm * 7.72mm, box cupling external diameter φ 154mm in said.Pipe 33 is welded to connect with outer tube 32 in said, structurally adopts and applies the different thermal stretching amounts that prestressed method compensates inner and outer pipes for interior pipe.Because interior pipe is in extended state at normal temperatures, when temperature raises gradually, tensile stress also reduces thereupon, and temperature continues to raise, and interior pipe changes pressured state into by tension state.Because the preparatory elongation of interior pipe has reduced the compressive stress that receives after the thermal stretching, guaranteed the operate as normal of thermal sleeve.
About the further structure of the concrete production method and the thermal sleeve 30 of thermal sleeve 30, can be with reference to making principle and the structure of Chinese patent 97115719.7 about insulated tubing, but of the present invention 5
1/
2" vacuum heat-insulation sleeve pipe is because the insulated tubing of bore in the Chinese patent 97115719.7, thereby, of the present invention 5
1/
2" manufacture difficulty of vacuum heat-insulation sleeve pipe is bigger, and control of process parameters is more careful.For example, embody in the following areas:
The making of thermal sleeve
(1) laminated aluminium foil wall: utilize the radiation shield surface layer layer reflection of the aluminium foil formation of high reflectance, radiant heat flux is caused very high thermal resistance
(2) annular space vacuumizes: under the high vacuum situation, and the direct contact mainly high in the adiabatic system, that glass fabric that thermal conductivity is low stops panel with the radiation transmitance, the glass fabric porosity is big, can increase the effective reflective surface area of panel
(3) dose getter: H2 and other residual gas of steel pipe infiltrated in absorption, keeps layer vacuum
The insulation system design optimization
(1) number of plies is selected: the annular space area is little, selects for use 4 layers of aluminium foil as radiation shield, and the body apparent heat conductivity reaches 0.01w/m. ℃
(2) integrally-built reasonability: adopt axial bag method, large mesh cloth to do wall,, improve the speed of finding time to reduce thermal conductivity.
(3) adopt measures such as increasing getter consumption, prolongation evacuated time and raising baking temperature, make the vacuum of insulation system reach designing requirement.
The technological measure of thermal sleeve improves:
(1) improves the sandblast quality, increase blast tube bore and sandblast size and blasting pressure.
(2) roasting plant of finding time improves, and adopts collection skin heating technique, has manufactured and designed special-purpose heating pole.
(3) find time shutoff frock and stifled welding electrode have been designed again, have realized 51/2 that " vacuum heat-insulation sleeve pipe is stifled weldering under vacuum.
Among the present invention 5
1/
2" vacuum heat-insulation sleeve pipe is 5 of the total machine making factory in Liaohe Oil Field production
1/
2" vacuum heat-insulation sleeve pipe through field trial, is accomplished 2000m thermal sleeve manufacturing and has been carried out the heat-proof quality test, and product heat-proof quality grade all reaches requirement.Reached D level vacuum heat-insulation oil pipe performance level (0.006-0.02W/ (m. ℃)).Adopt between box cupling 31 and the outer tube 32 and be threaded.
Borehole size of the present invention and casing programme are seen table 1.
Table 1 casing programme table
Brill of the present invention, completion process: one opens the back requires to be lowered to external diameter φ 273.05mm, grade of steel J55 surface pipe; Two choice-starts are selected vacuum spacer pipe for use with φ 247.6mm drill bit more than the oil reservoir.Specification is respectively φ 139.7mm * 7.72mm (box cupling external diameter φ 154mm), φ 114.3mm * 6.35mm.The APIN80 steel-grade bushing is selected at the oil reservoir position for use, and specification is φ 114.3mm * 6.35mm.
Further; As shown in Figure 2; Said heavy crude heat extraction process also comprises: outside said thermal sleeve, bind and be lowered to hollow stem 40 (testing tube); To test temperature or the mass dryness fraction of said thermal sleeve outer wall in steam injection process, obtain near the data of temperature, pressure or mass dryness fraction of oil reservoir position or oil reservoir.In order to obtain the real-time change data of thermal sleeve outside wall temperature, realize long term monitoring, outside sleeve pipe, to bind and be lowered to Φ 40mm hollow stem, hollow stem together is lowered in company with thermal sleeve, carries out temperature test in order to being lowered to optical fiber in the steam injection process.Prior art is used for measuring the temperature of oil jacket annular space; Can't directly react near the data of oil reservoir position or oil reservoir; Just the indirect reaction oil reservoir is annotated the effect of vapour, certainly exists than big difference with near oil reservoir position or the oil reservoir truth, and the present invention measures the temperature or the mass dryness fraction of sleeve outer wall; Directly obtain the data of oil reservoir position or oil reservoir vicinity, more can react the effect that oil reservoir is annotated vapour really and accurately.
In addition; Prior art is lowered to hollow stem (also claiming testing tube) separately after being employed in completion usually separately, and the position that hollow stem is lowered to is in oil jacket annular space or the oil pipe, and hollow stem is outside equipped with temperature detection device or sensor etc.; Optical fiber is set in the hollow stem; Temperature, pressure sensor are bound on the optical fiber, are used for measuring the temperature of oil jacket annular space, the present invention just directly is lowered to hollow stem and is used for the measuring unit tube wall temperature in drilling well or completion process; Reduce the step that hollow stem is lowered to separately separately after completion, practiced thrift the activity duration.The present invention and prior art difference are mainly in time that hollow stem (testing tube) is lowered to and the position that is lowered to; Other aspects, for example about temperature detection device or sensor etc. and hollow stem and with the structure equitemperature logging technique of set-up mode, hollow stem of optical fiber in the hollow stem can be with reference to prior art.
Brill completion of the present invention requirement
1) bores the completion requirement
(1) it is placed in the middle to require vacuum heat-insulation sleeve pipe and hollow stem to bind the whole tubing string in back;
(2) sleeve pipe prestressing force: consider test well, vacuum heat-insulation sleeve pipe has carried out autofrettage, steam injecting temperature and has been no more than factors such as 300 ℃, and this well only lifts casing wt, does not carry out autofrettage in addition;
(3) cementing requirement: press the thermal production well completion,, guarantee cementing quality because sleeve pipe is eccentric, annular clearance is excessive;
(4) the perforation mode is selected: select the well-case perforating completion for use, oil reservoir well section interlayer position considered is kept away penetrate, in order to the later stage layerwise production;
2) hollow stem is lowered to requirement
(1) first hollow stem pin thread slices off the follower head weldering extremely, apart from about vacuum heat-insulation sleeve pipe guide shoe 0.5m, is welding together with vacuum heat-insulation sleeve pipe.
(2) hollow stem is lowered to and requires hollow stem box cupling and casing coupling to stagger in the process, and guarantees that hollow stem is vertical, does not bend.Oil reservoir top 150m sets upright the eccentric location of whole tubing string centralizer after the binding with the eccentric centralizer of interior usefulness, and (5 requirements can be controlled direction; Guarantee that sleeve pipe can not rotate in well; Avoid sleeve pipe and hollow stem to be intertwined); Every sleeve pipe is installed 3 clamps, and every effective 2 clamps of cover of all the other well sections are fixed, and require the welding of hollow stem and casing coupling;
(3) sleeve pipe and hollow stem are wanted conscientious latus rectum, and with the jack rabbit siphunculus of corresponding size, hollow rod was with φ 23mm * 1m jack rabbit through rod before sleeve pipe was gone into the well.
(4) hollow stem binding clamp, hollow stem O-ring seal require to select exotic material (260 ℃) for use, in the process of going into the well, smear high temperature resistant dope.
(5) fill diesel oil in the hollow stem, the first-class plug in top avoids falling into foreign material, like this, can prevent that hollow stem from being flattened by down-hole pressure.
(6) guarantee after the completion that hollow stem is vertical, special-purpose well head is installed, guarantee that hollow stem can pass through well head TCH test channel (internal diameter is greater than Φ 50mm).
(7) every mouthful of well stays respectively 2 of Φ 40mm hollow rod 0.5m, 1.0m, 1.5m pipe nipples.
Further, said heavy crude heat extraction process also comprises: through directly steam injection is with the notes of individual layer in oil well vapour in said thermal sleeve 30, general notes vapour promptly of the present invention is directly steam injection in said thermal sleeve 30.As shown in Figure 1; When oil reservoir 50 was the individual layer oil reservoir, individual layer was annotated vapour and need not the oil pipe that other annotates vapour is set in thermal sleeve 30, is implemented in directly steam injection in said thermal sleeve of well head through the head valve group; Directly steam injection gets final product in said thermal sleeve 30; Reduced that than conventional method the step that other annotates the oil pipe of vapour being set in thermal sleeve 30, practiced thrift the time, reduced that the required cost of oil pipe being set; Reduced the phenomenon of the notes vapour that the problem owing to oil pipe itself influences, becoming the down-hole, to annotate vapour be that well head is annotated vapour.
Further; As shown in Figure 3; Oil reservoir comprises at least: upper strata oil reservoir 51 and lower floor's oil reservoir 53, and said heavy crude heat extraction process also comprises: layer steam injection in oil well, said layer steam injection comprises: in said thermal sleeve, be lowered to plain tubing 70 to said lower floor oil reservoir 53; To oil reservoir 51 steam injections of said upper strata, regulate notes vapour amount through the oil jacket annular space between said thermal sleeve 30 and the said plain tubing 70 to oil reservoir 51 steam injections of said upper strata through head valve group (not shown).Plain tubing 70 is non-insulated tubing, traditional relatively insulated tubing, plain tubing 70 do not have interior pipe and outer tube and between heat-barrier material, traditional insulated tubing for example is the structure in the Chinese patent 97115719.7.The present invention adopts plain tubing 70 to annotate vapour in said thermal sleeve 30.Because the above sleeve pipe of oil reservoir is a thermal sleeve 30, so, adopt plain tubing 70 to annotate vapour, need not to worry the conduction of heat of thermal sleeve 30 and influence and annotate the vapour mass dryness fraction that like this, can make steam injection string become plain tubing by insulated tubing, cost reduces a lot.
Further; The below of said plain tubing 70 is connected with telescoping tube in turn, interlayer vapour drives packer, screen casing or horn mouth; Said layer steam injection also comprises: the inner chamber through said plain tubing is regulated the notes vapour amount to the oil reservoir steam injection of said lower floor to the oil reservoir steam injection of said lower floor through the head valve group.The steam injection string structure that the present invention adopts is as shown in Figure 3, drives packer 90+ screen casing (or horn mouth) 95 by plain tubing 70+ telescoping tube 80+ interlayer vapour successively from top to bottom, and screen casing (or horn mouth) 95 is positioned at bottom oil reservoir 53 places.Thermal sleeve 30 is 5
1/
2" vacuum heat-insulation sleeve pipe, the size of plain tubing can be 2
7/
8", the inner chamber of plain tubing 70 is communicated with the inner passage that telescoping tube 80, interlayer vapour drive packer 90, through screen casing (or horn mouth) 95 to 53 steam injections of bottom oil reservoir.
The structure of head valve group can adopt the valve of existing wellhead assembly, and only, among the present invention, one in the notes vapour passage that the head valve group connects is the inner chamber of plain tubing 70, and one is the oil jacket annular space between thermal sleeve 30 and the said plain tubing 70.
From the oil jacket annular space between sleeve pipe and the plain tubing upper strata oil reservoir is annotated vapour; Annotate vapour and rely on packer to realize that layering vapour drives to lower floor's oil reservoir from plain tubing, the present invention has increased this notes vapour passage of oil jacket annular space between sleeve pipe and the plain tubing, thereby makes the notes vapour of each oil reservoir rely on the notes vapour passage in the oil pipe no longer fully; Can make and single notes vapour passage is set in the oil pipe gets final product; And existing steam injection string is provided with a plurality of distributing valves in oil pipe, opens through pitching and annotates the vapour passage; The steam injection string complex structure, the operation adjustment is trouble very.The present invention need not to regulate notes vapour amount in the down-hole, need not pulling work, only needs dynamically adjust joining the vapour amount through regulating at well head, and technology is more simple.
Adopt 5
1/
2" vacuum heat-insulation sleeve pipe completion, inside are lowered to 2
7/
8" oil pipe carries out the design that layering vapour drives technology and completion tubular column, has changed the notes way of steam of traditional sleeve pipe+instlated tubular.Under vacuum heat-insulation sleeve pipe completion condition, regulate to realize through well head that layering vapour drives and join the vapour amount and dynamically adjust, avoided traditional pulling work, simplify construction technology, reduce cost, improved annotate vapour can be handling.
The above is merely the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.For each ingredient of the present invention can make up under the condition of not conflicting each other, any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (9)
1. heavy crude heat extraction process, said heavy crude heat extraction process comprises: production string is set above the oil reservoir in oil well, it is characterized in that, said heavy crude heat extraction process comprises:
Adopt thermal sleeve to carry out completion the production string more than the oil reservoir in the oil well, said thermal sleeve comprises: interior pipe, be socketed in said in outside the pipe outer tube, be folded in said in heat-barrier material and the box cupling that is set in said outer tube one end between pipe and the said outer tube;
Said heavy crude heat extraction process also comprises: outside said thermal sleeve, bind and be lowered to testing tube, to test the temperature in steam injection process or the mass dryness fraction of said thermal sleeve outer wall.
2. heavy crude heat extraction process as claimed in claim 1 is characterized in that, said testing tube is a hollow stem, and said hollow stem together is lowered in company with said thermal sleeve, in said hollow stem, is lowered to optical fiber in the steam injection process to test.
3. heavy crude heat extraction process as claimed in claim 2 is characterized in that, fills diesel oil in the said hollow stem.
4. heavy crude heat extraction process as claimed in claim 1 is characterized in that, said thermal sleeve is 5
1/
2" vacuum heat-insulation sleeve pipe, said in pipe be respectively φ 114.3mm * 6.35mm, φ 139.7mm * 7.72mm with the specification of said outer tube, box cupling external diameter φ 154mm applies through pipe in adopting that prestressed method is managed in compensating and the different thermal stretching amounts of outer tube.
5. heavy crude heat extraction process as claimed in claim 1 is characterized in that, said heavy crude heat extraction process also comprises: annotate vapour through direct steam injection in said thermal sleeve with individual layer oil reservoir in oil well.
6. heavy crude heat extraction process as claimed in claim 1; It is characterized in that; Oil reservoir comprises at least: upper strata oil reservoir and lower floor's oil reservoir; Said heavy crude heat extraction process also comprises: layer steam injection in oil well, said layer steam injection comprises: in said thermal sleeve, be lowered to plain tubing to said lower floor oil reservoir, through the oil jacket annular space between said thermal sleeve and the said plain tubing to the oil reservoir steam injection of said upper strata; Regulate the notes vapour amount to the oil reservoir steam injection of said upper strata through the head valve group, the inner chamber through said plain tubing is to the oil reservoir steam injection of said lower floor.
7. heavy crude heat extraction process as claimed in claim 6; It is characterized in that; The below of said plain tubing is connected with telescoping tube in turn, interlayer vapour drives packer, screen casing or horn mouth, and said layer steam injection is regulated the notes vapour amount to the oil reservoir steam injection of said lower floor through the head valve group.
8. heavy crude heat extraction process as claimed in claim 7 is characterized in that plain tubing is of a size of 2
7/
8".
9. heavy crude heat extraction process as claimed in claim 5 is characterized in that, is implemented in directly steam injection in said thermal sleeve of well head through the head valve group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100216670A CN102562016A (en) | 2012-01-31 | 2012-01-31 | Heavy oil thermal recovery process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100216670A CN102562016A (en) | 2012-01-31 | 2012-01-31 | Heavy oil thermal recovery process |
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| CN102562016A true CN102562016A (en) | 2012-07-11 |
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| CN2012100216670A Pending CN102562016A (en) | 2012-01-31 | 2012-01-31 | Heavy oil thermal recovery process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775058A (en) * | 2013-12-31 | 2014-05-07 | 中国石油天然气股份有限公司 | Method for determining heat loss of shaft |
| CN103867173A (en) * | 2014-02-17 | 2014-06-18 | 胜利油田孚瑞特石油装备有限责任公司 | Well-completion pipe column for heat-insulated oil casing and manufacturing method thereof |
| CN106593314A (en) * | 2016-12-20 | 2017-04-26 | 中国石油天然气股份有限公司 | Deep water high temperature high pressure oil gas well test tubular column |
| CN107327296A (en) * | 2017-07-28 | 2017-11-07 | 中国石油天然气股份有限公司 | Downhole thermometry apparatus and method |
| CN108172329A (en) * | 2017-12-22 | 2018-06-15 | 江苏中天科技股份有限公司 | Oil well detection cable and its manufacturing method |
| CN109424325A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of flow string and oil extraction system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782470A (en) * | 1972-08-23 | 1974-01-01 | Exxon Production Research Co | Thermal oil recovery technique |
| US4109722A (en) * | 1977-04-28 | 1978-08-29 | Texaco Inc. | Thermal oil recovery method |
| US4392530A (en) * | 1981-04-30 | 1983-07-12 | Mobil Oil Corporation | Method of improved oil recovery by simultaneous injection of steam and water |
| CN1121587A (en) * | 1994-10-26 | 1996-05-01 | 石油勘探开发科学研究院热力采油研究所 | Quick quality testing system and method for thermal-insulating pipe |
| CN1177699A (en) * | 1997-08-13 | 1998-04-01 | 辽河石油勘探局机械修造集团公司 | Vacuum heat-insulation oil pipe and manufacturing technology therefor |
| CN2526502Y (en) * | 2002-01-15 | 2002-12-18 | 盘锦唯高科技有限责任公司 | Layered constant steam distributing valve for thickened oil heat recovery well |
| CN200958368Y (en) * | 2006-10-20 | 2007-10-10 | 张超 | Vacuum thermal-insulating double pipe of oil well |
| CN201090201Y (en) * | 2007-09-24 | 2008-07-23 | 辽河石油勘探局 | Antisepsis fire resistant heat insulation pipe |
-
2012
- 2012-01-31 CN CN2012100216670A patent/CN102562016A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782470A (en) * | 1972-08-23 | 1974-01-01 | Exxon Production Research Co | Thermal oil recovery technique |
| US4109722A (en) * | 1977-04-28 | 1978-08-29 | Texaco Inc. | Thermal oil recovery method |
| US4392530A (en) * | 1981-04-30 | 1983-07-12 | Mobil Oil Corporation | Method of improved oil recovery by simultaneous injection of steam and water |
| CN1121587A (en) * | 1994-10-26 | 1996-05-01 | 石油勘探开发科学研究院热力采油研究所 | Quick quality testing system and method for thermal-insulating pipe |
| CN1177699A (en) * | 1997-08-13 | 1998-04-01 | 辽河石油勘探局机械修造集团公司 | Vacuum heat-insulation oil pipe and manufacturing technology therefor |
| CN2526502Y (en) * | 2002-01-15 | 2002-12-18 | 盘锦唯高科技有限责任公司 | Layered constant steam distributing valve for thickened oil heat recovery well |
| CN200958368Y (en) * | 2006-10-20 | 2007-10-10 | 张超 | Vacuum thermal-insulating double pipe of oil well |
| CN201090201Y (en) * | 2007-09-24 | 2008-07-23 | 辽河石油勘探局 | Antisepsis fire resistant heat insulation pipe |
Non-Patent Citations (1)
| Title |
|---|
| 王德有等: "氮气隔热助排提高稠油蒸汽吞吐热采效果", 《钻采工艺》, vol. 24, no. 3, 30 June 2001 (2001-06-30), pages 25 - 28 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775058A (en) * | 2013-12-31 | 2014-05-07 | 中国石油天然气股份有限公司 | Method for determining heat loss of shaft |
| CN103775058B (en) * | 2013-12-31 | 2016-08-31 | 中国石油天然气股份有限公司 | Method for determining heat loss of shaft |
| CN103867173A (en) * | 2014-02-17 | 2014-06-18 | 胜利油田孚瑞特石油装备有限责任公司 | Well-completion pipe column for heat-insulated oil casing and manufacturing method thereof |
| CN106593314A (en) * | 2016-12-20 | 2017-04-26 | 中国石油天然气股份有限公司 | Deep water high temperature high pressure oil gas well test tubular column |
| CN107327296A (en) * | 2017-07-28 | 2017-11-07 | 中国石油天然气股份有限公司 | Downhole thermometry apparatus and method |
| CN109424325A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of flow string and oil extraction system |
| CN108172329A (en) * | 2017-12-22 | 2018-06-15 | 江苏中天科技股份有限公司 | Oil well detection cable and its manufacturing method |
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Application publication date: 20120711 |