CN201588597U - Ground control type cementing tool - Google Patents
Ground control type cementing tool Download PDFInfo
- Publication number
- CN201588597U CN201588597U CN2009202437703U CN200920243770U CN201588597U CN 201588597 U CN201588597 U CN 201588597U CN 2009202437703 U CN2009202437703 U CN 2009202437703U CN 200920243770 U CN200920243770 U CN 200920243770U CN 201588597 U CN201588597 U CN 201588597U
- Authority
- CN
- China
- Prior art keywords
- cementing tool
- control type
- switch spool
- ground control
- urceolus
- 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
Images
Landscapes
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A ground control type cementing tool comprises an outer barrel, a switch valve plug, a sealing head, a sealing base, wherein the inner peripheral surface of the outer barrel is provided with inner threads; the switch valve plug is also provided with outer threads and is arranged in the outer barrel, in addition, the switch valve plug is fit with the outer barrel by adopting threads, so that the switch valve plug can be screwed in or out through the threads in the outer barrel; the bottom of the outer barrel is provided with a taper-shaped fastener which is fastened with the sealing base; the switch valve plug and the sealing head are connected by a pin; the sealing base is provided with a grouting channel A; and one end of the sealing head is matched with the grouting channel A so as to tightly block the grouting channel A. The ground control type cementing tool has simple structure and convenient use and can realize direct operation on a drill platform, and therefore the ground control type cementing tool can be started up or shut down in proper time.
Description
Technical field
The utility model relates to oil gas field well cementing operation instrument, particularly a kind of ground control type cementing tool.
Background technology
At present, the exploration exploitation of stratum mineral resources is engaged in the whole world, the science and technology of application and means, and the general way that adopts is nothing more than there being two kinds: a kind of is drilling well, a kind of is to excavate.Drilling prospection exploitation has that cost is low, degree of depth hole can reach nearly myriametre, is applicable to the exploration exploitation of liquid and toxic gas under deep layer, high temperature, the hyperbaric environment.Excavate the exploration exploitation and have cost height, normal temperature no pressure down, be only applicable to the degree of depth about km, the exploitation of shallow top layer solid.But storage such as oil, natural gas, bittern (ore deposit), underground heat is all more than km, and has high temperature, high pressure or super-pressure, poisonous characteristic, and therefore, drilling well is widely used in the exploration exploitation of stratum mineral resources such as oil, natural gas, bittern (ore deposit), underground heat.
Drilling well: popular saying, utilize the process of plant equipment exactly in the stratum internal drilling.According to drilling depth, to take all factors into consideration from economy, technical, manufacturability, each section hole diameter size in the well is inequality, and well is dark more, and the bore size of drilling well is big more; Otherwise the bore size of drilling well is then more little.Well head dwindles piecemeal to the hole diameter size in shaft bottom.In drilling process, because the change of hole diameter size and the variation of rock stratum, drilling well size sometimes is long or need because of other, collapse for preventing striding of the borehole wall, will make lining with steel pipe (claiming sleeve pipe in drilling well), and solidify the seat envelope with the cement paste and the stratum borehole wall, this process is cemented the well exactly.In the well cementation process, when cement paste was filled between the sleeve pipe and the borehole wall, cement paste solidifies needed certain hour, did not allow its flow (refluence).Grout injection prevents that cement paste from flowing backwards, and reaches that cement paste solidifies and this instrument that uses just is cementing tool.
The operating principle of cementing tool and prerequisite three big basic functions: one, during grout injection, passage must be unimpeded; Two, after grout injection finished, passage will be closed; Three, after well cementation completes successfully, when drilling depth does not reach final size, need parts such as switch sealing mechanism are easily bored mill off.
For a long time, China is engaged in the cementing tool that the stratum mining mineral resource uses and always is from ball, the compressed spring type cementing tool of western countries and the import of U.S. Halliburton's petroleum tool company.This instrument is in the grout injection process, and it is bigger to have a resistance, and foreign material such as cement paste are difficult for flushing and remove in spring, and when closing, the pivot angle amplitude of compression spring is big, and the reliability of the directed return of ball is relatively poor, ball can produce a negative pressure, reduces to seal return pressure.In sum, its product mainly has following shortcoming: the reliability of the directed return of ball is relatively poor when closing, and after closing, the hole condition condition is poor slightly then can be poorly sealed, causes cementing quality difference or well cementation unsuccessful, and the well cementation success rate only reaches about 80 percent.Well cementation high-quality well rate is about 40 percent.
And this type of cementing tool (float collar, float shoe) in the well cementation process, can't be implemented in and directly be controlled at the unlatching of the cementing tool more than the km in the stratum on the offshore boring island, close operations such as sealing mechanism.
The utility model content
At above-mentioned weak point, it is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, and can realize direct control on offshore boring island, the ground control type cementing tool that makes cementing tool can open in good time, close.
In order to achieve the above object, the utility model has been taked following technical scheme: a kind of ground control type cementing tool, comprise urceolus, switch spool, seal head, sealed base, wherein, described urceolus inner peripheral surface is provided with internal thread, the switch spool also is provided with external screw thread, the switch spool is positioned at urceolus, and switch spool and urceolus adopt threads engaged, make the switch spool in urceolus, to screw out or precession by screw thread, outer tube bottom is provided with the taper button, and taper button and sealed base be interlockingly connected, and the switch spool is connected by pin with seal head; Described sealed base is provided with grouting channel A, and seal first end and match with grouting channel A, and the inclined-plane of the inclined-plane of seal head setting and sealed base setting closely tangent (hard sealing), stifled tight grouting channel A.
Described switch spool is provided with grouting channel B.
Be provided with the elastic packing medium on described switch spool and the seal head.
On the operating principle of the present utility model: in cement operations, urceolus head end of the present utility model is connected with sleeve pipe, after then the sleeve pipe connection being transferred to (down-hole) precalculated position with the utility model, one of switch spool is connected with terrestrial operation with the drilling rod button, on offshore boring island, the console switch spool, make the switch spool along urceolus (screw thread back-out) the suitably distance that moves up, the seal head that has the switch spool to adopt pin to connect the simultaneously respective distance that also moves up, grouting channel B all opens, and cement paste is in the milk from switch spool grouting channel B and sealed base grouting channel A.When cement paste turns back to well head, when detecting the approaching grouting of the density density of cement paste, pour into clear water, after clear water is filled grouting channel, operation switch valve core moves down (screw thread precession) suitably distance on offshore boring island, seal head also moves down respective distance simultaneously, grouting channel A and grouting channel B sealing, after treating that cement paste solidifies, operation switch valve core on offshore boring island makes the switch spool to (back-out of switch spool screw thread) the suitably distance that moves up with seal head, breaks away from urceolus control, take out switch spool, seal head, well cementing operation is finished.
The beneficial effects of the utility model are:
Use the utility model, before the well cementation, not pressure testing detects sealing.Before the well cementation setting of casing, well-flushing not.After the utility model was transferred to predetermined well section, opening encapsulation switch spool and seal head, grout injection were directly controlled in ground.After grout injection finished, enclosed switch spool and seal head were arbitrarily closed in the direct control in ground.After treating that cement paste solidifies, take out switch spool and seal head, switch spool and seal head are reused after maintenance.If drilling well size no show destination does not need mill off well cementation seal, directly bore drilling well then down.The existing instrument that uses of this instrument operate easylier, and weight is about 2/5 of existing instrument, does not use non-ferrous metal, is to have about 1/5 of instrument cost, material-saving environmental protection now.And can bear the above counter-pressure of 100Mpa, satisfy current drilling depth, the well cementing operation under 200 ℃ of well temperature and the various complex hole condition, the well cementation success rate reaches 100%, and high-quality well rate reaches more than 98%, and social economy is fine." ground control type cementing tool " will bring the revolution of well cementing operation, the related Sections teaching material of universities and colleges, oil and gas industry field creep into well cementation standard, quota etc., all may will revise thereupon and adjust.
The utility model has been broken traditional grouting pattern decades, and cement paste does not pass through from internal surface of sleeve pipe, but directly passes through in this hole diameter drilling rod.Grouting drilling rod in this hole diameter passes through, and has solved the accurate measuring problem of cement paste; Save certain cement paste; Thoroughly solved cement paste in continuing drilling well, to the pollution of mud.
Description of drawings
Fig. 1 the utility model structural representation.
Fig. 2 the utility model outer tube structure schematic diagram.
Fig. 3 the utility model switch valve cored structure schematic diagram.
Fig. 4 the utility model seal head structural representation.
Fig. 5 the utility model sealed base structural representation.
Among the figure: 1. urceolus; 2. switch spool; 3. seal head; 4. sealed base; 5. pin; 6. grouting channel A; 7. grouting channel B; 8. elastic packing medium.
The specific embodiment
Below we are described further the utility model in conjunction with the accompanying drawings: a kind of simple in structure, easy to use, can on offshore boring island, realize direct control, the ground control type cementing tool that makes cementing tool can open in real time, close.
In order to achieve the above object, the utility model has been taked following technical scheme: shown in Figure 5 as Fig. 1 one, a kind of ground control type cementing tool, comprise urceolus 1, switch spool 2, seal head 3, sealed base 4, urceolus 1 inner peripheral surface is provided with internal thread, switch spool 2 also is provided with external screw thread, switch spool 2 is positioned at urceolus 1, and switch spool 2 adopts threads engaged with urceolus 1, make switch spool 2 in urceolus 1, to screw out or precession by screw thread, urceolus 1 bottom is provided with taper and buckles, and taper button and sealed base 4 be interlockingly connected, and switch spool 2 is connected by pin 5 with seal head 3; Sealed base 4 is provided with grouting channel A6, seal head 3 one ends match with grouting channel A6, and the inclined-plane that inclined-plane that seal head 3 is provided with and sealed base 4 are provided with closely tangent (hard sealing), stifled tight grouting channel A6, switch spool 2 also is provided with grouting channel B7, be provided with elastic packing medium 8 in 3 of switch spool 2 and the sealings, make the utility model better tightness.
Claims (3)
1. ground control type cementing tool, comprise urceolus (1), switch spool (2), seal head (3), sealed base (4), it is characterized in that: described urceolus (1) inner peripheral surface is provided with internal thread, the switch spool is provided with external screw thread, switch spool (2) is positioned at urceolus, and switch spool (2) and urceolus (1) employing threads engaged, and urceolus (1) bottom is provided with taper and buckles, and taper button and sealed base (4) are interlockingly connected, and switch spool (2) is connected by pin (5) with seal head (3); Described sealed base (4) is provided with grouting channel A (6), and seal head (3) one ends match with grouting channel A (6).
2. ground control type cementing tool according to claim 1 is characterized in that: described switch spool (2) is provided with grouting channel B (7).
3. ground control type cementing tool according to claim 1 is characterized in that: be provided with elastic packing medium (8) on described switch spool (2) and the seal head (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202437703U CN201588597U (en) | 2009-12-07 | 2009-12-07 | Ground control type cementing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202437703U CN201588597U (en) | 2009-12-07 | 2009-12-07 | Ground control type cementing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588597U true CN201588597U (en) | 2010-09-22 |
Family
ID=42748376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202437703U Expired - Fee Related CN201588597U (en) | 2009-12-07 | 2009-12-07 | Ground control type cementing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588597U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011562A (en) * | 2010-11-05 | 2011-04-13 | 四川中圣科技有限公司 | Construction process for ground mechanical control type well cementing tool |
| CN111155964A (en) * | 2020-03-10 | 2020-05-15 | 何华 | A exempt from to bore stopper cementing ware for oil development |
| CN114076201A (en) * | 2020-08-21 | 2022-02-22 | 广东博智林机器人有限公司 | Hole grouting device and grouting equipment |
-
2009
- 2009-12-07 CN CN2009202437703U patent/CN201588597U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011562A (en) * | 2010-11-05 | 2011-04-13 | 四川中圣科技有限公司 | Construction process for ground mechanical control type well cementing tool |
| CN111155964A (en) * | 2020-03-10 | 2020-05-15 | 何华 | A exempt from to bore stopper cementing ware for oil development |
| CN114076201A (en) * | 2020-08-21 | 2022-02-22 | 广东博智林机器人有限公司 | Hole grouting device and grouting equipment |
| CN114076201B (en) * | 2020-08-21 | 2024-02-13 | 广东博智林机器人有限公司 | Hole grouting device and grouting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105298490B (en) | Underground fluid Stratified Sampling apparatus and method based on U-tube technology | |
| CN104141470B (en) | The pore-forming molding method of underground coal mine fracturing borehole casing section | |
| CN101139919B (en) | Negative pressure well cementing system and control method thereof | |
| CN109723404A (en) | Coal measure gas prospect pit naked eye device for plugging and method | |
| CN102330545A (en) | Oil well sand prevention method for heavy oil reservoir | |
| CN101775977B (en) | Dual-tube injection well safety production string | |
| CN103603628A (en) | Injecting-plugging method during under-well work | |
| CN201588597U (en) | Ground control type cementing tool | |
| US20110315381A1 (en) | Compositions and method for use in plugging a well | |
| CN110439510A (en) | A kind of method of layer-by-layer acidification seperated layer water injection | |
| CN205532529U (en) | Piston control formula is prevented returning and is told eccentric injection mandrel | |
| CN209556980U (en) | Coal measure gas prospect pit naked eye device for plugging | |
| CN205858311U (en) | A kind of bore hole staged fracturing completion tubular column | |
| CA2367075A1 (en) | Method and system for testing a borehole by the use of a movable plug | |
| CN102011562A (en) | Construction process for ground mechanical control type well cementing tool | |
| CN2837505Y (en) | Down-hole grouting tool | |
| CN102828732B (en) | Two-stage two-segment back-washing well inserting seal sleeve protected separate injection tubing string and dispensing method thereof | |
| CN110485968A (en) | Two sections of level-one eccentric acid note integrated pipe columns | |
| CN204024614U (en) | Counter-flow resisting bridge type eccentric injection mandrel | |
| CN204591210U (en) | A kind of multistage cementing instrument | |
| CN208024343U (en) | A kind of simulation cementing replaces the experimental provision of drilling fluid flow field flow variation | |
| CN201588576U (en) | Downhole coalbed sealed coring device | |
| CN110500079A (en) | More formation acidizing water injection strings | |
| RU2431032C1 (en) | Method to preserve head of emergency blowing deep-water oil and gas well and device for its realisation | |
| CN206144517U (en) | Cement holds and stays ware |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20101207 |