CN207393137U - A kind of coal bed gas well well testing replaces water well washing apparatus with spinning - Google Patents
A kind of coal bed gas well well testing replaces water well washing apparatus with spinning Download PDFInfo
- Publication number
- CN207393137U CN207393137U CN201721302808.0U CN201721302808U CN207393137U CN 207393137 U CN207393137 U CN 207393137U CN 201721302808 U CN201721302808 U CN 201721302808U CN 207393137 U CN207393137 U CN 207393137U
- Authority
- CN
- China
- Prior art keywords
- well
- central tube
- forming head
- rotating cone
- cone forming
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000003245 coal Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000005406 washing Methods 0.000 title claims abstract description 16
- 238000009987 spinning Methods 0.000 title claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 14
- 238000005553 drilling Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 208000012886 Vertigo Diseases 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 206010016825 Flushing Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of coal bed gas well well testing spinnings to replace water well washing apparatus, it is applied to cbm exploration technical field, it includes outer barrel, central tube and rotating cone forming head, the rotating cone forming head is equipped with nozzle, diversion trench is equipped in rotating cone forming head, the rotating cone forming head is fixedly connected with central tube by connecting cylinder, and the central tube is fixedly connected with outer barrel by gland；The structurally simple, economical practical, low manufacture cost of the utility model, after it is connected with the tubing string for device of giving a trial lecture, by the jet power of the pump injected system adjustment nozzle on ground, the integral-rotation of the present apparatus is realized by the reaction force of jet power, and then replace drilling fluid in pit shaft, remove the effect that the borehole wall sticks drilling fluid and mudcake, it ensure that the quality of well testing test.
Description
Technical field
The utility model is related to a kind of well washing apparatus, a kind of specifically coal bed gas well well testing replaces washing well with spinning
Device.
Background technology
Coal bed gas（It is commonly called as gas）Be it is a kind of it is very clean, that calorific value is high, high-quality, safety, exploitation prospect are wide is new
The energy.The easy leakage of caving in of coal-bearing strata, must allocate suitable drilling fluid, drilling fluid is to subsequent bore hole injection pressure drop well testing
The result of test has a certain impact.Before previous coal bed gas injection pressure drop well testing, well-flushing measure is not taken generally, only with for water
Method will insulate section drilling fluid injected with clear water after replace.Because drilling fluid proportion is larger, and there is part to attach to borehole wall coal
Rock stratum section is difficult merely to eliminate drilling fluid for water, is affected to coalbed gas logging result.
Coalbed methane reservoir penetration signature influences coal bed gas well capacity, and it is further that test result will directly influence gas field
Exploration and development, be the important coal seam reservoirs parameter that must accurately obtain.It was difficult to eliminate drilling fluid to well testing in the past for water method
The influence of process.Urgently research and develop a kind of well washing equipment for being directed to coal bed gas well, meeting coal seam section hole condition.
Utility model content
The utility model technical issues that need to address are to provide a kind of coal bed gas well well testing spinning for washing well dress
It puts, can fully clean drilling fluid, removing borehole wall mudcake that the borehole wall sticks, improve drilling fluid elimination effect, ensure that well testing
Test quality.
In order to solve the above technical problems, technical solution is used by the utility model：
The utility model includes outer barrel, central tube and rotating cone forming head, and the rotating cone forming head is equipped with nozzle, rotation
Turn to be equipped with diversion trench in conical head, the rotating cone forming head is fixedly connected with central tube by connecting cylinder, the central tube with outside
Cylinder is fixedly connected by gland.
Further, the junction of the gland and central tube is equipped with sealing device.
Further, the outer barrel is connected with central tube by the protrusion set on outer barrel with central tube, the protrusion with
The junction of central tube is equipped with sealing device.
Further, the sealing device is sealant rubber ring.
Further, connected between the central tube and connecting cylinder, between connecting cylinder and rotating cone forming head by screw thread
It connects.
Further, the rotating cone forming head, diversion trench and nozzle are integrally formed.
Further, spray orifice is offered on the nozzle.
By adopting the above-described technical solution, the advantageous effect that the utility model obtains is：
The structurally simple, economical practicality of the utility model improves the same of the defects of original well testing eliminates flushing fluid for water law
When, moreover it is possible to accomplish the drill-in fluid that fully the cleaning borehole wall sticks, the effect for removing borehole wall mudcake.It is suitable for coal seam section well-flushings, can
The utility model is directly connected to well testing tubing string bottom, is come in and gone out underground with well testing tubing string, well testing injection process can sieve
Pipe uses, and does not influence the well testing technology time.The injection pressure of the nozzle can be pumped injection system adjustment by ground well testing.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the utility model.
Wherein, 1, outer barrel；2nd, central tube；3rd, gland；4th, connecting cylinder；5th, diversion trench；6th, rotating cone forming head；7th, spray orifice；8、
Nozzle；9th, protrusion.
Specific embodiment
The utility model is described in further details with reference to embodiment：
A kind of coal bed gas well well testing spinning includes for water well washing apparatus, structure as shown in Figure 1, it include outer barrel 1, in
Heart cylinder 2 and rotating cone forming head 6, the outer barrel 1 and central tube 2 can be made of seamless pipe.The outer barrel 1 can connect well testing tubing string
Bottom, be the present apparatus and well testing tubing string connecting component, outer barrel 1 and central tube 2 are the passages of liquid in pipe flowing.It is described
Central tube 2 is fixedly connected with outer barrel 1 by gland 3, the junction of the outer barrel 1 and central tube 2, the outer barrel 1 and central tube 2
It is connected by the protrusion 9 set on outer barrel 1 with central tube 2, the protrusion 9 and the junction of central tube 2 are equipped with sealing device；Pressure
The junction of lid 3 and central tube 2 is equipped with sealing device, and the sealing device is sealant rubber ring.The gland 3 is used to fix
Outer barrel 1 and central tube 2 simultaneously play the role of sealing.In this way, protrusion 9 and gland 3 are for fixed and center seal cylinder 2 effect.
The taper surface of the rotating cone forming head 6 is equipped with nozzle 8, spray orifice 7 is offered on the nozzle 8, for sparging
Well liquid effectively cleans the mudcake of the borehole wall, and the injection pressure of the nozzle 8 can be pumped injection system adjustment by ground well testing.The rotating cone
Forming head 6 using the recoil torque that the reaction force of the nozzle injection flushing fluid on its conical surface generates realize rotating cone forming head 6 from
Body rotates, and then central tube 2, gland 3 and outer barrel 1 is driven to realize integral-rotation.
Diversion trench 5 is equipped in rotating cone forming head 6, the rotating cone forming head 6, diversion trench 5 and nozzle 8 are integrally cast,
Between the rotating cone forming head 6 and connecting cylinder 4, between connecting cylinder 4 and central tube 2 by the threaded connection of mutual cooperation into one
A entirety, in this way, when high pressure water flow jet-action is in diversion trench 5 in rotating cone forming head 6, diversion trench 5 is by high pressure liquid in tubing string
Body pressure potential is converted to rotation function and rotating cone forming head 6, connecting cylinder 4 and central tube 2 is driven to rotate together.
The outer barrel 1 of the present apparatus is first connected to the bottom of well testing tubing string, the present apparatus by the utility model during implementation
With well testing tubing string lower going-into-well bottom.Ground face-pumping injection system is opened, the KCL solution for being pumped into enough clear water or 10% concentration is replaced
Water.Drilling fluid in well is all replaced out, until until ground, well head returns out clear water.
Suitable ground face-pumping injection pressure power is adjusted, repeat to be promoted or transfers tubing string, to complete well washing apparatus to coal seam section
Clean-out service.After the completion of well-flushing process, other well testing processes are carried on, the present apparatus rises together with well testing tubing string after well testing
Go out.
Claims (7)
1. a kind of coal bed gas well well testing replaces water well washing apparatus with spinning, it is characterised in that：Including outer barrel（1）, central tube（2）With
Rotating cone forming head（6）, the rotating cone forming head（6）It is equipped with nozzle（8）, rotating cone forming head（6）It is interior to be equipped with diversion trench（5）, institute
State rotating cone forming head（6）With central tube（2）Pass through connecting cylinder（4）It is fixedly connected, the central tube（2）With outer barrel（1）Pass through pressure
Lid（3）It is fixedly connected.
2. a kind of coal bed gas well well testing according to claim 1 replaces water well washing apparatus with spinning, it is characterised in that：It is described
Gland（3）With central tube（2）Junction be equipped with sealing device.
3. a kind of coal bed gas well well testing according to claim 2 replaces water well washing apparatus with spinning, it is characterised in that：It is described
Outer barrel（1）With central tube（2）Pass through outer barrel（1）The protrusion of upper setting（9）With central tube（2）Connection, the protrusion（9）With center
Cylinder（2）Junction be equipped with sealing device.
4. a kind of coal bed gas well well testing according to Claims 2 or 3 replaces water well washing apparatus with spinning, it is characterised in that：
The sealing device is sealant rubber ring.
5. a kind of coal bed gas well well testing according to claim 1 replaces water well washing apparatus with spinning, it is characterised in that：It is described
Central tube（2）With connecting cylinder（4）Between, connecting cylinder（4）With rotating cone forming head（6）Between be connected through a screw thread.
6. a kind of coal bed gas well well testing according to claim 1 replaces water well washing apparatus with spinning, it is characterised in that：It is described
Rotating cone forming head（6）, diversion trench（5）And nozzle（8）It is integrally formed.
7. a kind of coal bed gas well well testing according to claim 5 replaces water well washing apparatus with spinning, it is characterised in that：It is described
Nozzle（8）On offer spray orifice（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721302808.0U CN207393137U (en) | 2017-10-11 | 2017-10-11 | A kind of coal bed gas well well testing replaces water well washing apparatus with spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721302808.0U CN207393137U (en) | 2017-10-11 | 2017-10-11 | A kind of coal bed gas well well testing replaces water well washing apparatus with spinning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393137U true CN207393137U (en) | 2018-05-22 |
Family
ID=62331769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721302808.0U Expired - Fee Related CN207393137U (en) | 2017-10-11 | 2017-10-11 | A kind of coal bed gas well well testing replaces water well washing apparatus with spinning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443296A (en) * | 2020-11-23 | 2021-03-05 | 中国石油大学(华东) | Coal bed gas well is with dashing rotatory shower nozzle of buggy high pressure water jet |
-
2017
- 2017-10-11 CN CN201721302808.0U patent/CN207393137U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443296A (en) * | 2020-11-23 | 2021-03-05 | 中国石油大学(华东) | Coal bed gas well is with dashing rotatory shower nozzle of buggy high pressure water jet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 |