CN103161440A - Single-well coalbed methane horizontal well system and finishing method thereof - Google Patents
Single-well coalbed methane horizontal well system and finishing method thereof Download PDFInfo
- Publication number
- CN103161440A CN103161440A CN2013100620921A CN201310062092A CN103161440A CN 103161440 A CN103161440 A CN 103161440A CN 2013100620921 A CN2013100620921 A CN 2013100620921A CN 201310062092 A CN201310062092 A CN 201310062092A CN 103161440 A CN103161440 A CN 103161440A
- Authority
- CN
- China
- Prior art keywords
- well
- section
- horizontal
- horizontal well
- coalbed methane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000011152 fibreglass Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 abstract description 44
- 238000005553 drilling Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 15
- 238000010276 construction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a single-well coalbed methane horizontal well system and a finishing method thereof. The horizontal well system particularly comprises a horizontal well and a branch pocket section (L4), wherein the horizontal well comprises a vertical well section (L1), a deflecting section (L2) and a horizontal section (L3), and the branch pocket section (L4) which is used for collecting coal powder is formed through that side tracking is conducted on a pointed side tracking point of the horizontal well. The finishing method of the horizontal well system particularly includes the steps of finishing the horizontal well which comprises the vertical well section (L1), the deflecting section (L2) and the horizontal section (L3), and carrying out the side tracking on the pointed side tracking point of the horizontal well to finish the branch pocket section (L4). Compared with the prior art that the function of developing coalbed methane is achieved through two wells, the single-well coalbed methane horizontal well system achieves the function only through one well, and has the advantages of reducing covering area and well drilling cost, and avoiding waste.
Description
Technical field
The present invention relates to the CBM exploration and development field, particularly a kind of coalbed methane horizontal well system and Method Of Accomplishment thereof.
Background technology
In coal bed gas horizontal well recovery well type, two kinds of main well types are arranged at present, as shown in Fig. 1 and 2 figure: Fig. 1 is multi-branched horizontal well exploitation coal bed gas well bore schematic diagram; Fig. 2 is U-shaped well development coal bed gas well bore schematic diagram.Multi-branched horizontal well refers on ground a well site of 101 and first constructs and produce flatly straight well 103, then another wellsite applications water horizontal well 102 of 101 on ground, first be communicated with production straight well 103, then 104 updip directions creep into and complete multi-branched horizontal well 102 along the coal seam, utilize multi-branched horizontal well 102 that draining and the desorb passage in coal seam are provided.Produce straight well 103 and can carry out gas injection when horizontal well creeps on the one hand, realize that underbalance creeps into; Be lowered on the other hand various rows and adopt equipment and carry out water pumping gas production in producing intermediate range, produce straight well 103 and be typically provided with the pocket of 50 to 70 meters, adopt the coal dust of discharging in process in order to the row of being collected in from the horizontal segment of coal seam.U-shaped well be first on ground a wellsite applications of 201 produce flatly straight well 202, construction a bite directional horizontal wells 203 is coupled logical on another well site on the ground 201 along coal seam 204 updip directions apart from this straight well certain distance again, and directional horizontal wells 203 provides draining and the desorb passage in coal seam.Then utilize production straight well 202 to carry out water pumping gas production.Equally, the production straight well 202 of U-shaped well also is provided with the pocket of 50 to 70 meters usually, adopts the coal dust of discharging from the horizontal segment of coal seam in process in order to the row of being collected in.
In sum, existing horizontal well system all needs two mouthfuls of wells.A bite well is as producing straight well, can the row of being lowered to adopts equipment and carries out water pumping gas production, and the pocket of producing straight well is used for the row of collection and adopts the coal dust that produces in process, the minimizing pump detection period.Another mouthful engineering well is used for creeping in the coal seam, and draining and the desorb passage in coal seam is provided.Therefore, traditional coal seam air water horizontal well needs two well sites, has increased floor space.Due to the connection that also relates to two mouthfuls of wells, connection expense and drilling cost have been increased.After the engineering well construction is completed, horizontal well straight well section and inclination section are often discarded, cause the waste of resource.
Summary of the invention
The invention provides a kind of individual well eye coalbed methane horizontal well system and Method Of Accomplishment thereof, need two mouthfuls of wells solve to adopt prior art, increase floor space, increase drilling cost and cause the problem of the wasting of resources.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of individual well eye coalbed methane horizontal well system, this system comprises:
A horizontal well well that comprises straight well section L1, inclination section L2 and horizontal segment L3;
And the appointment side tracking point on described horizontal well well carries out sidetracking and the pocket section L4 of branch that forms.
In this system, the appointment side tracking point on described horizontal well well is a bit on inclination section L2, and the hole angle of this point is that 85 degree are to 90 degree.
In this system, described horizontal well well is the glass reinforced plastic pipe completion in the completion mode of specifying side tracking point.
In this system, the hole angle of any point on the described pocket section L4 of branch is less than 90 degree, and the length of the pocket section L4 of branch is 50 to 70 meters.
In this system, described horizontal segment L3 adopts the well type of a single main multiple-limb or many main multiple-limbs.
The invention also discloses a kind of Method Of Accomplishment of individual well eye coalbed methane horizontal well system, the method comprises:
Complete a horizontal well well that comprises straight well section L1, inclination section L2 and horizontal segment L3;
Appointment side tracking point on described horizontal well well carries out sidetracking and completes the pocket section L4 of branch.
In the method, the appointment side tracking point on described horizontal well well is a bit on inclination section L2, and the hole angle of this point is that 85 degree are to 90 degree.
The method further comprises: adopt the side tracking point of glass reinforced plastic pipe completion mode on the horizontal well well to carry out completion.
In the method, the hole angle of any point on the described pocket section L4 of branch is less than 90 degree, and the length of the pocket section L4 of branch is 50 to 70 meters.
In the method, described horizontal segment L3 adopts the well type of a single main multiple-limb or many main multiple-limbs.
By as seen above-mentioned, of the present invention comprising " horizontal well well that comprises straight well section L1, inclination section L2 and horizontal segment L3; And the appointment side tracking point on described horizontal well well carries out sidetracking and the pocket section L4 of branch that forms." individual well eye coalbed methane horizontal well system and comprise and " complete a horizontal well well that comprises straight well section L1, inclination section L2 and horizontal segment L3; Appointment side tracking point on described horizontal well well carries out sidetracking and completes the pocket section L4 of branch " individual well eye coalbed methane horizontal well system Method Of Accomplishment only make and to need a bite well can carry out the horizontal wells of coal bed gas; reduced the well site and taken up an area and drilling cost, avoided in the prior art because of horizontal well straight well section and the discarded wasting of resources that causes of inclination section.
Description of drawings
Fig. 1 is multi-branched horizontal well exploitation coal bed gas well bore schematic diagram;
Fig. 2 is U-shaped well development coal bed gas well bore schematic diagram;
Fig. 3 is individual well eye coalbed methane horizontal well system well bore schematic diagram.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Core concept of the present invention is to utilize individual well eye horizontal well system exploitation coal bed gas, and concrete technical scheme is to complete a horizontal well well, utilizes this well that the drainage channel in coal seam and the desorb passage of coal bed gas are provided.Then sidetracking goes out branch's pocket in the horizontal well well, utilize branch's pocket to realize in prior art producing the function that collection row that straight well has adopts the coal dust that the Coal During layer produces, and under in prior art the row in producing straight well adopt equipment change under in horizontal well.Thereby realized the function of two mouthfuls of wells of prior art with a bite well.
Fig. 3 is individual well eye coalbed methane horizontal well system well bore schematic diagram, and as shown in Figure 3, individual well eye coalbed methane horizontal well system provided by the invention comprises: a horizontal well well that comprises straight well section (L1), inclination section (L2) and horizontal segment (L3); And the appointment side tracking point on described horizontal well well carries out sidetracking and branch's pocket section (L4) of forming.
The design build angle rate general control of inclination section L2 is at 0.3-0.35 degree/rice.This is in order to guarantee that the later stage can pass through inclination section L2 during setting of casing smoothly, to guarantee that also the drilling depth of coal seam section is long as far as possible simultaneously.
The effect of horizontal segment L3 mainly is to provide the drainage channel in coal seam 302 and the desorb passage of coal bed gas.Horizontal segment L3 can adopt the well type of a single main multiple-limb or many main multiple-limbs, and to increase the desorb passage of coal bed gas, concrete enforcement decided according to geological condition.Horizontal segment L3 can barefoot completion, also can be lowered to screen casing or sleeve pipe according to actual conditions simultaneously, so that well is more stable.In order to facilitate the construction of the pocket L4 of branch, when horizontal segment L3 is lowered to screen casing or sleeve pipe, as the well section that is lowered to screen casing or sleeve pipe comprises the appointment side tracking point, the side tracking point that is used for the sidetracking pocket L4 of branch can be lowered to the glass reinforced plastic pipe that is suitable for the sidetracking construction, in the future can directly destroy its structure with drill bit during sidetracking and carry out sidetracking, convenient and swift.
And carrying out sidetracking, the appointment side tracking point of the pocket section L4 of branch on described horizontal well well inclination section L2 form.The effect of the pocket L4 of branch is that the coal dust that the Coal During layer produces is adopted by the row of collection.
When selecting side tracking point, require the hole angle (being that well track is at the tangent line of this point and the angle of vertical curve) of selected side tracking point between the 85-90 degree, for example, selecting the upper hole angle (being that well track is at the tangent line of this point and the angle of vertical curve) of inclination section L2 is that 87 points of spending are side tracking point.This is because horizontal segment L3 creeps into along target coal seam 302 updip directions, so after the hole angle of Horizontal Well was increased to 90 degree, continuing slowly increased, and causing the point of hole angle 90 degree is the minimum point of well track, namely the point that the most easily gathers of coal dust.Therefore should carry out sidetracking in the place near the point of hole angle 90 degree as far as possible.Due to well track hole angle generally reach before 90 degree the very fast and hole angle of increasing hole angle and be increased to 90 degree after increasing hole angles slower, the hole angle (being that well track is at the tangent line of this point and the angle of vertical curve) of therefore preferred side tracking point is between the 85-90 degree.
In order to make the pocket L4 of branch realize that collection row adopts the function of the coal dust of Coal During layer generation, the hole angle of any point on this section (being that well track is at the tangent line of this point and the angle of vertical curve) should be less than 90 degree.The coal dust of adopting in process for the row of making easily enters the pocket L4 of branch, should will hang down the hole angle of this section with the large drop angle rate of trying one's best after the beginning sidetracking.The hole angle of this section is less, the easier pocket L4 of branch that enters under action of gravitation of coal dust.The length of the pocket L4 of branch is generally 50-70 rice, and this section can be lowered to metal or plastics screen casing according to actual conditions, also can barefoot completion if the stratum is stable.
When utilizing individual well eye coalbed methane horizontal well system provided by the invention to carry out coal bed gas extraction, described horizontal well well provides the drainage channel in coal seam and the desorb passage of coal bed gas; Row is adopted equipment be lowered in horizontal well well of the present invention, in order to adapt to the needs of high deviation angle, can adopt the equipment such as jet pump to arrange and adopt.The coal dust that row adopts the generation of Coal During layer enters in the pocket L4 of branch, has realized utilizing the purpose of individual well eye coal bed gas horizontal well system development coal bed gas.
The Method Of Accomplishment of individual well eye coalbed methane horizontal well system of the present invention is described below in conjunction with Fig. 3.The Method Of Accomplishment of individual well eye coalbed methane horizontal well system of the present invention comprises: complete a horizontal well well that comprises straight well section L1, inclination section L2 and horizontal segment L3; Appointment side tracking point on described horizontal well well carries out sidetracking and completes the pocket section L4 of branch.
When implementing method of the present invention, sequence of construction is followed successively by L1, L2, L3 and L4.Below describe respectively in order.
Adopt which kind of casing programme to be decided according to the actual requirements in practice of construction, the below drives a well as example take three and describes.One opens the drill bit that uses diameter 311.1mm (also can select other drill bits and corresponding sleeve pipe according to design, below all identical) 301 bores and reaches basement rock from ground, completes the part of straight well section L1, is lowered to the surface pipe of diameter 273.1mm.
Two open the drill bit that uses diameter 241.3mm, and the straight well section of first constructing L1 completes straight well section L1, and brill begins creeping into of inclination section L2 after reaching the design kickoff point (KOP), are drilled into target coal seam 302 with the design build angle rate, then are lowered to diameter 177.8mm protective casing.In order to guarantee that the later stage can pass through inclination section L2 during setting of casing smoothly, guarantee that also the drilling depth of coal seam section is long as far as possible simultaneously, the design build angle rate general control of inclination section L2 is at 0.3-0.35 degree/rice.
Three open use diameter 152mm drill bit, creep into along target coal seam 302 updip directions, until coal seam section drilling depth satisfies the requirement of coal bed gas extraction, thereby complete the construction of horizontal segment L3.The effect of horizontal segment L3 mainly is to provide the drainage channel in coal seam 302 and the desorb passage of coal bed gas.Horizontal segment L3 can adopt the well type of a single main multiple-limb or many main multiple-limbs, and to increase the desorb passage of coal bed gas, concrete enforcement decided according to geological condition.Horizontal segment L3 can barefoot completion, also can be lowered to screen casing or sleeve pipe according to actual conditions simultaneously, so that well is more stable.In order to facilitate the construction of the pocket L4 of branch, when horizontal segment L3 is lowered to screen casing or sleeve pipe, as the well section that is lowered to screen casing or sleeve pipe comprises the appointment side tracking point, the side tracking point that is used for the sidetracking pocket L4 of branch can be lowered to the glass reinforced plastic pipe that is suitable for the sidetracking construction, in the future can directly destroy its structure with drill bit during sidetracking and carry out sidetracking, convenient and swift.
After coal seam section drilling depth was completed, sidetracking was a bit carried out in choosing on inclination section L2, creeps into for the pocket L4 of branch that collects coal dust.Require the hole angle (being that well track is at the tangent line of this point and the angle of vertical curve) of selected side tracking point between the 85-90 degree, for example, selecting the upper hole angle (being that well track is at the tangent line of this point and the angle of vertical curve) of inclination section L2 is that 87 points of spending are side tracking point.This is because horizontal segment L3 creeps into along target coal seam 302 updip directions, so after the hole angle of Horizontal Well was increased to 90 degree, continuing slowly increased, and causing the point of hole angle 90 degree is the minimum point of well track, namely the point that the most easily gathers of coal dust.Therefore should carry out sidetracking in the place near the point of hole angle 90 degree as far as possible.Due to well track hole angle generally reach before 90 degree the very fast and hole angle of increasing hole angle and be increased to 90 degree after increasing hole angles slower, the hole angle (being that well track is at the tangent line of this point and the angle of vertical curve) of therefore preferred side tracking point is between the 85-90 degree.In order to make the pocket L4 of branch realize that collection row adopts the function of the coal dust of Coal During layer generation, the hole angle of any point on this section (being that well track is at the tangent line of this point and the angle of vertical curve) should be less than 90 degree.The coal dust of adopting in process for the row of making easily enters the pocket L4 of branch, should will hang down the hole angle of this section with the large drop angle rate of trying one's best after the beginning sidetracking.The hole angle of this section is less, the easier pocket L4 of branch that enters under action of gravitation of coal dust.The length of the pocket L4 of branch is generally 50-70 rice, and this section can be lowered to metal or plastics screen casing according to actual conditions, also can barefoot completion if the stratum is stable.
When creeping into, according to design seam data and well track, the landwaste that note observing when boring, returns and the variation of gamma value judge stratum, well track place, in time adjust well track.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. an individual well eye coalbed methane horizontal well system, is characterized in that, described system comprises:
A horizontal well well that comprises straight well section (L1), inclination section (L2) and horizontal segment (L3);
And the appointment side tracking point on described horizontal well well carries out sidetracking and branch's pocket section (L4) of forming.
2. a kind of individual well eye coalbed methane horizontal well system as claimed in claim 1 is characterized in that: the appointment side tracking point on described horizontal well well be on inclination section (L2) a bit, the hole angle of this point is that 85 degree are to 90 degree.
3. a kind of individual well eye coalbed methane horizontal well system as claimed in claim 1 is characterized in that: described horizontal well well is the glass reinforced plastic pipe completion in the completion mode of specifying side tracking point.
4. a kind of individual well eye coalbed methane horizontal well system as claimed in claim 1 is characterized in that: the hole angle of any point on described branch's pocket section (L4) is less than 90 degree, and the length of branch's pocket section (L4) is 50 to 70 meters.
5. a kind of individual well eye coalbed methane horizontal well system as claimed in claim 1, is characterized in that: the well type of the single main multiple-limb of described horizontal segment (L3) employing or many master's multiple-limbs.
6. the Method Of Accomplishment of an individual well eye coalbed methane horizontal well system, is characterized in that, described method comprises:
Complete a horizontal well well that comprises straight well section (L1), inclination section (L2) and horizontal segment (L3);
Appointment side tracking point on described horizontal well well carries out sidetracking and completes branch's pocket section (L4).
7. the Method Of Accomplishment of individual well eye coalbed methane horizontal well system as claimed in claim 6 is characterized in that:
Appointment side tracking point on described horizontal well well is a bit on inclination section (L2), and the hole angle of this point is that 85 degree are to 90 degree.
8. the Method Of Accomplishment of individual well eye coalbed methane horizontal well system as claimed in claim 6, is characterized in that, the method further comprises:
Adopt the side tracking point of glass reinforced plastic pipe completion mode on the horizontal well well to carry out completion.
9. the Method Of Accomplishment of individual well eye coalbed methane horizontal well system as claimed in claim 6 is characterized in that:
The hole angle of any point on described branch's pocket section (L4) is less than 90 degree, and the length of branch's pocket section (L4) is 50 to 70 meters.
10. the Method Of Accomplishment of individual well eye coalbed methane horizontal well system as claimed in claim 6 is characterized in that:
Described horizontal segment (L3) adopts the well type of a single main multiple-limb or many main multiple-limbs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100620921A CN103161440A (en) | 2013-02-27 | 2013-02-27 | Single-well coalbed methane horizontal well system and finishing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100620921A CN103161440A (en) | 2013-02-27 | 2013-02-27 | Single-well coalbed methane horizontal well system and finishing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103161440A true CN103161440A (en) | 2013-06-19 |
Family
ID=48584935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100620921A Pending CN103161440A (en) | 2013-02-27 | 2013-02-27 | Single-well coalbed methane horizontal well system and finishing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103161440A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422812A (en) * | 2013-08-02 | 2013-12-04 | 奥瑞安能源国际有限公司 | Single-well coal bed gas multi-branch horizontal well drilling and completion method |
| CN103422813A (en) * | 2013-08-02 | 2013-12-04 | 奥瑞安能源国际有限公司 | Single-well coal bed gas multi-branch horizontal well system and well drilling method |
| CN104790934A (en) * | 2015-04-03 | 2015-07-22 | 中国石油化工股份有限公司 | Coal bed gas horizontal well exploitation process |
| CN104912479A (en) * | 2015-04-30 | 2015-09-16 | 中煤科工集团西安研究院有限公司 | Method for drilling and completion of horizontal branched well for coal bed gas |
| CN109252813A (en) * | 2018-11-19 | 2019-01-22 | 哈丁歇尔顿石油工程技术（海南）有限公司 | A kind of parallel how main branch horizontal well system |
| CN110566165A (en) * | 2019-10-30 | 2019-12-13 | 河南理工大学 | Large-curvature horizontal open hole shaft flexible sieve tube running device and running method |
| CN111980642A (en) * | 2020-09-01 | 2020-11-24 | 中联煤层气有限责任公司 | Construction method of coal bed gas multi-branch horizontal well and multi-branch horizontal well |
| CN112963124A (en) * | 2021-02-23 | 2021-06-15 | 重庆万普隆能源技术有限公司 | Coal bed gas extraction method |
| CN113153146A (en) * | 2021-01-06 | 2021-07-23 | 北京奥瑞安能源技术开发有限公司 | Communicated horizontal well and drilling method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333858A (en) * | 1998-11-20 | 2002-01-30 | Cdx天然气有限公司 | Method and system for accessing substerranean deposits from the surface |
| CN1651715A (en) * | 2005-03-25 | 2005-08-10 | 北京奥瑞安能源技术开发有限公司 | Methods and systems for accessing target geological bodies |
| CN1685131A (en) * | 2002-08-22 | 2005-10-19 | Cdx天然气有限公司 | Method and system for accessing subterranean deposits |
| CN1924291A (en) * | 2006-07-27 | 2007-03-07 | 山东省煤田地质局第二勘探队 | Process for gas collection by a well with one mouth and multiple branches drilled along coal layer |
| WO2011000022A1 (en) * | 2009-07-01 | 2011-01-06 | Methane Technologies Pty Ltd | A method of extracting methane from a coal deposit |
| CN102425397A (en) * | 2011-12-29 | 2012-04-25 | 郑州大学 | Method for exploiting coal-bed methane by utilizing water force of horizontal pinnate well of double well-shaft to scour, drill and relieve pressure |
-
2013
- 2013-02-27 CN CN2013100620921A patent/CN103161440A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333858A (en) * | 1998-11-20 | 2002-01-30 | Cdx天然气有限公司 | Method and system for accessing substerranean deposits from the surface |
| CN1685131A (en) * | 2002-08-22 | 2005-10-19 | Cdx天然气有限公司 | Method and system for accessing subterranean deposits |
| CN1651715A (en) * | 2005-03-25 | 2005-08-10 | 北京奥瑞安能源技术开发有限公司 | Methods and systems for accessing target geological bodies |
| CN1924291A (en) * | 2006-07-27 | 2007-03-07 | 山东省煤田地质局第二勘探队 | Process for gas collection by a well with one mouth and multiple branches drilled along coal layer |
| WO2011000022A1 (en) * | 2009-07-01 | 2011-01-06 | Methane Technologies Pty Ltd | A method of extracting methane from a coal deposit |
| CN102425397A (en) * | 2011-12-29 | 2012-04-25 | 郑州大学 | Method for exploiting coal-bed methane by utilizing water force of horizontal pinnate well of double well-shaft to scour, drill and relieve pressure |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422812A (en) * | 2013-08-02 | 2013-12-04 | 奥瑞安能源国际有限公司 | Single-well coal bed gas multi-branch horizontal well drilling and completion method |
| CN103422813A (en) * | 2013-08-02 | 2013-12-04 | 奥瑞安能源国际有限公司 | Single-well coal bed gas multi-branch horizontal well system and well drilling method |
| CN103422812B (en) * | 2013-08-02 | 2015-11-25 | 奥瑞安能源国际有限公司 | The coal bed gas multi-branch horizontal drilling well of individual well eye and completion method |
| CN103422813B (en) * | 2013-08-02 | 2015-11-25 | 奥瑞安能源国际有限公司 | Individual well eye multi-lateral horizontal well system for coal bed gas and boring method |
| CN104790934A (en) * | 2015-04-03 | 2015-07-22 | 中国石油化工股份有限公司 | Coal bed gas horizontal well exploitation process |
| CN104912479A (en) * | 2015-04-30 | 2015-09-16 | 中煤科工集团西安研究院有限公司 | Method for drilling and completion of horizontal branched well for coal bed gas |
| CN109252813A (en) * | 2018-11-19 | 2019-01-22 | 哈丁歇尔顿石油工程技术（海南）有限公司 | A kind of parallel how main branch horizontal well system |
| CN110566165A (en) * | 2019-10-30 | 2019-12-13 | 河南理工大学 | Large-curvature horizontal open hole shaft flexible sieve tube running device and running method |
| CN111980642A (en) * | 2020-09-01 | 2020-11-24 | 中联煤层气有限责任公司 | Construction method of coal bed gas multi-branch horizontal well and multi-branch horizontal well |
| CN111980642B (en) * | 2020-09-01 | 2022-04-12 | 中联煤层气有限责任公司 | Construction method of coal bed gas multi-branch horizontal well and multi-branch horizontal well |
| CN113153146A (en) * | 2021-01-06 | 2021-07-23 | 北京奥瑞安能源技术开发有限公司 | Communicated horizontal well and drilling method thereof |
| CN112963124A (en) * | 2021-02-23 | 2021-06-15 | 重庆万普隆能源技术有限公司 | Coal bed gas extraction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103161440A (en) | Single-well coalbed methane horizontal well system and finishing method thereof | |
| CN102116140B (en) | Construction method for enhancing extraction effect of ground coal bed gas | |
| CN106351660B (en) | A method of descend water resource to be regulated and controled over the ground for coal mining region | |
| CN102979498B (en) | Coal bed gas multi-branch horizontal well system | |
| CN110397428B (en) | Displacement coalbed methane yield increasing method for coalbed methane jointly mined by vertical well and U-shaped butt well | |
| Ma et al. | Drilling and completion technologies of coalbed methane exploitation: an overview | |
| CN102606124B (en) | The synchronous volume fracturing technology of dual horizontal well segmentation many bunches | |
| CN109577919B (en) | Mining method of coal bed gas in low-permeability coal bed | |
| CN103422812B (en) | The coal bed gas multi-branch horizontal drilling well of individual well eye and completion method | |
| CN109057768A (en) | Recovery method suitable for thin interbed native soda deposit | |
| CN103161434A (en) | Mining method for low permeability reservoir of shale gas and the like | |
| Bazitov et al. | First Fishbone well drilling at Vankorskoe field | |
| CN102080530A (en) | Method for constructing horizontal coal bed gas well and vertical drainage and mining well | |
| CN110485986A (en) | Fracture and vug carbonate reservoir depth open-hole horizontal well is segmented acid fracturing control water method for increasing | |
| CN110306965A (en) | A kind of stimulation method for coalbed methane low-yield well area | |
| CN106968661A (en) | It is a kind of to strengthen the completion method of hot water type geothermal system | |
| CN103422813B (en) | Individual well eye multi-lateral horizontal well system for coal bed gas and boring method | |
| CN101994505B (en) | Drilling construction method by cooperation of horizontal wells and extraction straight wells for coal bed methane in multiple objective layers | |
| CN110352287A (en) | The reservoir stimulation of hydraulic fracturing is carried out including the channel by extending | |
| CN107152261A (en) | Coal bed gas extraction system and method for construction | |
| Andersen et al. | Horizontal Drilling and Completion: Denmark | |
| CN104989330A (en) | Coalbed gas recovery method | |
| CN106930733A (en) | Coal bed gas group wells extraction system and method for construction | |
| CN103924958A (en) | Coal bed gas multi-branch horizontal well applicable to syncline structures | |
| CN103835647A (en) | Method for drilling floating pebble bed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130619 |