CN202047748U - Ultra short radius horizontal well flexible drilling tool - Google Patents
Ultra short radius horizontal well flexible drilling tool Download PDFInfo
- Publication number
- CN202047748U CN202047748U CN2011201146271U CN201120114627U CN202047748U CN 202047748 U CN202047748 U CN 202047748U CN 2011201146271 U CN2011201146271 U CN 2011201146271U CN 201120114627 U CN201120114627 U CN 201120114627U CN 202047748 U CN202047748 U CN 202047748U
- Authority
- CN
- China
- Prior art keywords
- ball
- bulb
- contact
- ball seat
- flex
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title abstract description 15
- 239000011257 shell materials Substances 0.000 claims abstract description 10
- 230000000875 corresponding Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 235000012970 cakes Nutrition 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 280000032498 Groovy companies 0.000 claims description 5
- 238000005452 bending Methods 0.000 abstract description 2
- 281000122339 Arrium companies 0.000 abstract 1
- 239000003921 oils Substances 0.000 description 5
- 238000005516 engineering processes Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injections Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011499 joint compounds Substances 0.000 description 1
- 239000010410 layers Substances 0.000 description 1
- 238000000034 methods Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solutions Substances 0.000 description 1
- 239000011901 water Substances 0.000 description 1
Abstract
Description
Technical field
The utility model relates to a kind of special installation of drilling well, particularly relates to a kind of flexible drill string that is used for directed drilling.
Background technology
At present, the most of old filed of China has entered the middle and later periods of exploitation, main force's block pressure coefficient is more and more lower, adopt traditional drilling mode exploitation economy worse and worse, how to utilize the drilling well means to improve the remaining oil production efficiency, improve the oil field development effect, reducing development cost and evading the oil field development risk has become an important topic.In the existing oil exploitation industry, the small curve long radius of its enforcement, middle radius, short radius all exist many shortcomings such as cost height, drilling period length, DeGrain.Boring super short radial horizontal well in slim-hole, is the new technology that begins one's study the external eighties in 20th century and develop.Mainly be two kinds of methods: the one, with the broken rock of high-pressure injection, this technology is the high-pressure water jet rock-breaking and well-drilling because of what use, need to be equipped with that more ground special equipment and instrument, cost are higher, output is than unbalance, and be subjected to the restriction in lithology, well depth and expansion super-large diameter hole, dwindled range of application, and also there are defectives such as the horizontal well wellbore construction complexity that gets out is irregular, drilling period is long, application life is short, horizontal range is limited in this method; The 2nd, adopt mud motor, must be hinged screw rod or turbine, its shortcoming is that power drilling tool is fragile, the cost height, build angle rate is limited, and safety is not high.
The utility model content
It is little that the technical problems to be solved in the utility model provides a kind of bend radius, the super short radial horizontal well flexible drill string that cost is low, easy and simple to handle.
The utility model super short radial horizontal well flexible drill string, comprise top connection, lower contact, curved envelope and some flex-stems unit, described some flex-stems unit joins end to end and is positioned at curved envelope, described top connection is fixedlyed connected with flex-stem unit topmost, described lower contact is fixedlyed connected with flex-stem unit bottom, evenly offer some circumferential breach on the described curved envelope vertically, wherein said each flex-stem unit comprises the bulb body, ball seat, loam cake and lower cover, the upper end of described bulb body is provided with ball head, the bottom of bulb body is in transmission connection by the top of spline and ball seat, described loam cake is sleeved on the outside on bulb body middle part and ball seat top, and the threaded portion that passes through inner surface is fixedlyed connected with ball seat top with bulb body middle part, described lower cover upper inside surface is fixedly connected on the ball seat bottom by threaded portion, the inner surface of described ball seat bottom and lower cover lower inner surface are respectively arranged with upper groove and the low groove that roughly is dome-type, described upper groove and low groove have held ball head in the adjacent flex-stem unit, the inner surface of described upper groove is along circumferentially offering some through holes, offer inner groovy with the corresponding position of through hole on the described ball head, in described each through hole steel ball is installed, the part of described steel ball is positioned in the middle of the inner groovy, and the external surface at described ball seat middle part is equipped with spring bearing.
The utility model super short radial horizontal well flexible drill string, wherein said lower contact is connected with bottom flex-stem unit by a lower contact bulb, the upper end of described lower contact bulb is provided with the lower contact ball head, described lower contact bulb is positioned in the middle of the upper groove and low groove of flex-stem unit bottom, fixedly connected by threaded portion with lower contact in the bottom of described lower contact bulb, the lower end of described curved envelope is fixedly connected with one section lower house, described lower house is positioned at the outside of lower contact bulb, between lower house and the lower contact bulb taper roll bearing is installed, between lower house and the lower contact thrust ball bearing is installed;
The lower end of described top connection is stretched in the curved envelope, be in transmission connection by spline with the ball seat of flex-stem unit topmost, and be threaded with the loam cake of topmost flex-stem unit, the upper end of described curved envelope is fixedly connected with one section upper shell, described upper shell is positioned at the outside of top connection, is provided with self-aligning ball bearing between upper shell and the top connection.
The utility model super short radial horizontal well flexible drill string, the part that wherein said lower cover is threaded with ball seat is provided with spacer pin, and the inner of described spacer pin is radially passed lower cover and is positioned at ball seat.
The utility model super short radial horizontal well flexible drill string is provided with first sealing ring between wherein said ball head and the upper groove.
The utility model super short radial horizontal well flexible drill string is provided with second sealing ring between wherein said bulb body lower end and the ball seat.
The utility model super short radial horizontal well flexible drill string, wherein said curved envelope comprises the plurality of sections housing parts, the two ends of described every section housing parts are fixedly connected with left-handed short circuit and dextrorotation short circuit respectively, and described adjacent left-handed short circuit is connected by box cupling with the dextrorotation short circuit.
After the utility model super short radial horizontal well flexible drill string adopts technique scheme, make minimum bending radius can reach 2.2m, overcome shortcomings such as existing horizontal well drilling instrument flexibility is poor, the turning radius of curvature is big, use this instrument can be from former well big slope in the reservoir section, be that ultra-short radius gets out the level production runner that reaches more than 20 meters, effectively increase drainage area, improve recovery ratio, many wells of individual layer face and the many wells of stage construction be can realize, various borehole conditions and oil reservoir type are fit to.
Below in conjunction with accompanying drawing super short radial horizontal well flexible drill string of the present utility model is described further.
Description of drawings
Fig. 1 is the structural representation on the utility model super short radial horizontal well flexible drill string top;
Fig. 2 is the structural representation of the utility model super short radial horizontal well flexible drill string lower part;
Fig. 3 is the partial enlarged drawing at I place among Fig. 2.
The specific embodiment
As depicted in figs. 1 and 2, the utility model super short radial horizontal well flexible drill string comprises top connection 1, lower contact 2, curved envelope 3 and some flex-stems unit 4, and some flex-stems unit 4 joins end to end and is positioned at curved envelope 3.In conjunction with shown in Figure 3, each flex-stem unit 4 comprises bulb body 6, ball seat 7, loam cake 8 and lower cover 9, the upper end of bulb body 6 is provided with ball head 10, and the bottom of bulb body 6 is in transmission connection by the top of spline 11 with ball seat 7, is provided with second sealing ring 27 between bulb body 6 lower ends and the ball seat 7.Loam cake 8 is sleeved on the outside on bulb body 6 middle parts and ball seat 7 tops, and the threaded portion that passes through inner surface is fixedlyed connected with ball seat 7 tops with bulb body 6 middle parts, lower cover 9 upper inside surface are fixedly connected on ball seat 7 bottoms by threaded portion, the part that lower cover 9 is threaded with ball seat 7 is provided with spacer pin 25, the inner of spacer pin 25 is radially passed lower cover 9 and is positioned at ball seat 7, spacer pin 25 is used for lower cover 9 and ball seat 7 closely are fixed together, and prevents that lower cover 9 and ball seat 7 from getting loose.The inner surface of ball seat 7 bottoms and lower cover 9 lower inner surface are respectively arranged with upper groove 12 and the low groove 13 that roughly is dome-type, upper groove 12 and low groove 13 have held ball head 10 in the adjacent flex-stem unit 4, the inner surface of upper groove 12 is along circumferentially offering 8 through holes 14, offer 8 inner groovies 15 with through hole 14 corresponding positions on the ball head 10, in each through hole 14 steel ball 16 is installed, the part of steel ball 16 is positioned in the middle of the inner groovy 15, is provided with first sealing ring 26 between ball head 10 and the upper groove 12.The external surface at ball seat 7 middle parts is equipped with spring bearing 17, and spring bearing 17 is used for flex-stem unit 4 is supported in the curved envelope 3.
Lower contact 2 is by a lower contact bulb 18 and bottom flex-stem unit 4 " be connected; the upper end of lower contact bulb 18 is provided with lower contact ball head 19; lower contact bulb 18 is positioned at flex-stem unit 4 bottom " upper groove 12 " and low groove 13 " in the middle of, the bottom of lower contact bulb 18 and lower contact 2 are fixedlyed connected by threaded portion, the lower end of curved envelope 3 is fixedly connected with one section lower house 20, lower house 20 is positioned at the outside of lower contact bulb 18, between lower house 20 and the lower contact bulb 18 taper roll bearing 21 is installed, between lower house 20 and the lower contact 2 thrust ball bearing 22 is installed.
The lower end of top connection 1 is stretched in the curved envelope 3, be in transmission connection by spline with the ball seat 7 of topmost flex-stem unit 4 ', and be threaded with the loam cake 8 ' of topmost flex-stem unit 4 ', the upper end of curved envelope 3 is fixedly connected with one section upper shell 23, upper shell 23 is positioned at the outside of top connection 1, is provided with self-aligning ball bearing 24 between upper shell 23 and the top connection 1.
Curved envelope 3 comprises plurality of sections housing parts 28, evenly offer some circumferential breach 5 on the housing parts 28 vertically, make whole drilling tool can realize carrying out directional curvature to circumferential breach 5 one sides, the two ends of every section housing parts 28 are fixedly connected with left-handed short circuit 29 and dextrorotation short circuit 30 respectively, and adjacent left-handed short circuit 29 is connected by box cupling 31 with dextrorotation short circuit 30.
Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201146271U CN202047748U (en) | 2011-04-19 | 2011-04-19 | Ultra short radius horizontal well flexible drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201146271U CN202047748U (en) | 2011-04-19 | 2011-04-19 | Ultra short radius horizontal well flexible drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047748U true CN202047748U (en) | 2011-11-23 |
Family
ID=44988059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201146271U CN202047748U (en) | 2011-04-19 | 2011-04-19 | Ultra short radius horizontal well flexible drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047748U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643892A (en) * | 2013-12-17 | 2014-03-19 | 西南石油大学 | Tool for feeding drill strings under drive of screw |
| CN106089139A (en) * | 2016-08-10 | 2016-11-09 | 中国石油天然气股份有限公司 | Flexible coring tool |
| CN106121575A (en) * | 2016-08-10 | 2016-11-16 | 中国石油天然气股份有限公司 | Flexible coring tool |
| CN106150401A (en) * | 2016-08-10 | 2016-11-23 | 中国石油天然气股份有限公司 | Flex-stem and drilling equipment thereof |
| CN106223871A (en) * | 2016-08-10 | 2016-12-14 | 中国石油天然气股份有限公司 | Flex-stem |
| CN106761401A (en) * | 2016-11-15 | 2017-05-31 | 中国石油天然气股份有限公司 | Horizontal well drilling tool |
| CN107869312A (en) * | 2017-10-12 | 2018-04-03 | 中国石油天然气股份有限公司 | Flex-stem |
| CN108678668A (en) * | 2018-05-08 | 2018-10-19 | 中国石油集团渤海钻探工程有限公司 | A kind of barefoot laterally drilling horizontal well deflecting tool |
-
2011
- 2011-04-19 CN CN2011201146271U patent/CN202047748U/en active IP Right Grant
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643892A (en) * | 2013-12-17 | 2014-03-19 | 西南石油大学 | Tool for feeding drill strings under drive of screw |
| CN103643892B (en) * | 2013-12-17 | 2015-08-05 | 西南石油大学 | A kind of screw drive drill string sends instrument to |
| CN106089139A (en) * | 2016-08-10 | 2016-11-09 | 中国石油天然气股份有限公司 | Flexible coring tool |
| CN106121575A (en) * | 2016-08-10 | 2016-11-16 | 中国石油天然气股份有限公司 | Flexible coring tool |
| CN106150401A (en) * | 2016-08-10 | 2016-11-23 | 中国石油天然气股份有限公司 | Flex-stem and drilling equipment thereof |
| CN106223871A (en) * | 2016-08-10 | 2016-12-14 | 中国石油天然气股份有限公司 | Flex-stem |
| CN106223871B (en) * | 2016-08-10 | 2019-04-12 | 中国石油天然气股份有限公司 | Flex-stem |
| CN106121575B (en) * | 2016-08-10 | 2019-05-07 | 中国石油天然气股份有限公司 | Flexible coring tool |
| CN106150401B (en) * | 2016-08-10 | 2020-01-07 | 中国石油天然气股份有限公司 | Flexible drill pipe and drilling equipment thereof |
| CN106761401A (en) * | 2016-11-15 | 2017-05-31 | 中国石油天然气股份有限公司 | Horizontal well drilling tool |
| CN107869312A (en) * | 2017-10-12 | 2018-04-03 | 中国石油天然气股份有限公司 | Flex-stem |
| CN108678668A (en) * | 2018-05-08 | 2018-10-19 | 中国石油集团渤海钻探工程有限公司 | A kind of barefoot laterally drilling horizontal well deflecting tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102587832B (en) | Pressure resistant tool for reducing frictional resistance of horizontal well section | |
| CN204041022U (en) | A kind of twofold whirl water pumping gas production downhole tool | |
| CN104265160B (en) | Hydraulic oscillation axial impact device | |
| CN102966304B (en) | Mud retaining wall and air down-the-hole hammer drilling tool and drilling technology | |
| CN201943585U (en) | Sapphire helical composite jet-nozzle jet-cutting deep well drilling bit | |
| CN101787854B (en) | Subsection well completion system of bottom water reservoir horizontal well | |
| CN201593405U (en) | Integrated tubular column for horizontal well completion and fracturing production | |
| CN103422812B (en) | The coal bed gas multi-branch horizontal drilling well of individual well eye and completion method | |
| CN202990851U (en) | Screw type high-frequency percussion drilling tool | |
| CN103726791B (en) | Soft and broken seam gas pumping hole pipe-following drilling Counterboring apparatus | |
| CN203905815U (en) | Double-core reaming bit with multiple stages of reaming bodies | |
| CN102561951A (en) | Double-stage and double-speed well drilling tool | |
| CN201943607U (en) | Remote-control diameter-variable centralizer for well drilling | |
| CN202560158U (en) | Drillable combined bridge plug | |
| CN101748970B (en) | Ultra-short radius radial well-drilling tool system | |
| CN105464638A (en) | Coal bed gas well pulse radial drilling and double-pulsating hydrofracturing method | |
| CN204457418U (en) | Transient state low pressure cavitation corrosion pulsing jet drill motor | |
| CN203114241U (en) | Fracturing bridge plug | |
| CN106761382A (en) | A kind of deep-well coring device and its operating method | |
| CN104695923A (en) | Method for realizing sectional multi-cluster fracture of horizontal well by adopting soluble balls | |
| CN1766277A (en) | Air DTH hammer drilling equipment for core and follow-down drilling | |
| CN203925323U (en) | A kind of large diameter combined down-hole hammer drilling rod | |
| CN103899250A (en) | Device for improving oil and gas well drilling speed | |
| CN105735929B (en) | The SAW Oscillators of efficient rock-breaking are realized using impact function | |
| CN105113978A (en) | Single large-diameter reverse circulation air hammer capable of being used for large-size well hole drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CP03 | Change of name, title or address |
Address after: Two Beijing area 100102 Chaoyang District Wangjing new industrial zone in Lize Park No. 208 Building No. 3 room 3310 Patentee after: Beijing bezenith energy technology Limited by Share Ltd Address before: 100101 Beijing Chaoyang District Anli Road, No. 60 hospital runfengdeshang yuan B-1801 Patentee before: Beijing Bailishi Energy Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |