CN204851175U - Ball seat for horizontal well - Google Patents
Ball seat for horizontal well Download PDFInfo
- Publication number
- CN204851175U CN204851175U CN201520589050.8U CN201520589050U CN204851175U CN 204851175 U CN204851175 U CN 204851175U CN 201520589050 U CN201520589050 U CN 201520589050U CN 204851175 U CN204851175 U CN 204851175U
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- Prior art keywords
- ball
- section
- spheroid
- undergauge
- internal thread
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Abstract
The utility model relates to an oil gas is mining manufacture technical field in the pit, discloses a ball seat for horizontal well, the eight -way joint assembly comprises a joint body, the spheroid, the ball cage. Connect the body and personally experience sth. Part of the body for both ends area screwed tube -shape, it has set gradually undergauge horn mouth toper step to connect internal portion, the hole enlargement internal thread, the wide footpath of undergauge horn mouth toper step end meets with the hole enlargement internal thread, the hollow tube of ball cage for being provided with the entire body screw on the outer body, the ball cage is installed and is being connected body hole enlargement internal thread department, hole enlargement internal thread and entire body screw thread looks adaptation, the ball section and the section of blocking are put to inside being provided with of ball cage hollow tube, it is greater than the section of blocking internal diameter to put ball section internal diameter, the spheroid is placed and is being put the ball section, put ball section internal diameter and spheroid diameter clearance fit, it meets with the wide directly end of undergauge horn mouth toper step to put the ball section. Its simple structure is difficult for the sand setting, can measures at the float and can realize under the launch condition closing smoothly.
Description
Technical field
The utility model relates to mining equipment technical field under Oil/gas Well, particularly relates to a kind of horizontal well ball seat.
Background technology
Ball seat is configured on down-hole string, plays the kit of ball-and-seat effect.As shown in Figure 1, existing general conventional ball seat is primarily of joint, steel ball, orifice plate of blocking composition.Joint is pipe body shape, and two ends are threaded, and in order to connect the pipe of going into the well, its inner tubal wall has the conical surface of horn mouth shape, and steel ball can realize one-way sealing by seat on the conical surface.Baffle plate is an annulus having porous, plays and stops the spacing effect be communicated with fluid to steel ball.Such ball seat existing, horizontal well uses existing defects, and particularly under horizontal segment, small displacement control injection condition, when building the pressure in pipe, steel ball existence is difficult to return smoothly in time sit sealing problem.Because it is when being in horizontal segment, steel ball drops on tube wall under being subject to the impact of gravity can leave the position of ball seat, namely occur that horn mouth ball seat longitudinal center line and centre of sphere horizon have a difference in height h, ball return will be made under this state in ball seat, then need to overcome steel ball gravity, this just requires to have enough fluid flows (well head injection discharge capacity) to impact its playback, but some special construction environment and requirement are restrictions injects discharge capacity, and existing ball seat just can not reach the object of closing sealing smoothly in this case.In addition, existing similar ball seat is in down-hole horizontal section, there is the bottom periphery at ball, due to the stop of ball, easily deposit the foreign material problems such as sand, and not easily washed away by backwash, when needs build the pressure, foreign material are filled in sealing surface and surrounding thereof, cause and are not closed completely, and the requirement not reaching the sealing that builds the pressure causes constructs unsuccessfully.
Utility model content
The utility model aims to provide a kind of horizontal well ball seat, well solves the problems referred to above, and its structure is simple, not easily sand setting, can realize smooth closedown under small displacement injection condition.
The technical solution of the utility model is a kind of horizontal well ball seat, comprise fittings body, spheroid, ball cage, fittings body is the screwed cylindrical body in two ends, fittings body inside is disposed with undergauge horn mouth type conical bench, expanding internal thread, undergauge horn mouth type conical bench wide footpath end connects with expanding internal thread, ball cage is hollow section outer tube body being provided with entire body screw thread, ball cage is arranged on the expanding internal thread place of fittings body, described expanding internal thread and entire body screw thread suitable, described ball cage hollow section inside is provided with puts ball section and the section of blocking, described ball section internal diameter of putting is greater than the section of blocking internal diameter, spheroid is placed on ball section, put ball section internal diameter and sphere diameter matched in clearance, described ball section of putting connects with undergauge horn mouth type conical bench wide footpath end.
Further, described spheroid is steel ball.
Further, described ball cage inwall is milled with multiple radial strip groove vertically.
Further, the section of blocking described in is undergauge step.
The beneficial effects of the utility model are: by design of the present utility model, the conical surface of fittings body inwall undergauge horn mouth type conical bench is ball seat sealing surface, the entire body threaded engagement of the expanding internal thread on inwall and ball cage outer tube body is installed, and spheroid is limited in ball cage, put ball section internal diameter and sphere diameter matched in clearance, make the center line of spheroid with receive body axis on the same line, position-limiting action of blocking is played in the design of the section of blocking undergauge step simultaneously; Another external ball cage inwall is milled with multiple radial strip groove vertically, plays the effect of water conservancy diversion runner.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing ball seat;
Fig. 2 is the utility model structural representation;
Fig. 3 is A-A generalized section in Fig. 2;
Fig. 4 is the structural representation of ball cage;
In figure: 1. fittings body, 11. undergauge horn mouth type conical bench, 2. spheroid, 3. ball cage, 31. grooves.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figures 2 to 4, the utility model provides a kind of horizontal well ball seat, comprise fittings body 1, spheroid 2, ball cage 3, fittings body 1 is the screwed cylindrical body in two ends, fittings body 1 inside is disposed with undergauge horn mouth type conical bench 11, expanding internal thread, undergauge horn mouth type conical bench 11 wide footpath end connects with expanding internal thread, ball cage 3 is hollow section outer tube body being provided with entire body screw thread, ball cage 3 is arranged on the expanding internal thread place of fittings body 1, expanding internal thread and entire body screw thread suitable, ball cage 3 hollow section inside is provided with puts ball section and the section of blocking, put ball section internal diameter and be greater than the section of blocking internal diameter, spheroid 2 is placed on ball section, put ball section internal diameter to coordinate with spheroid 2 diametric clearance, put ball section to connect with undergauge horn mouth type conical bench 11 wide footpath end.Spheroid 2 is steel ball.Ball cage 3 inwall is milled with multiple radial strip groove 31 vertically.The section of blocking is undergauge step.
The utility model by " clipping " of spheroid 2 position is installed and surrounding emanant " particular design of flow channel for liquids; accomplished to overlap with the bell-mouthed axial line of ball seat at horizontal well horizontal segment state lower sphere 2; when making spheroid 2 times seats, do not need the gravity overcoming spheroid lifting again; In addition, the fluid course shape compared with prior art promoting spheroid 2 motion is different with area, the special liquid stream runner design of radial strip groove 31 of the present utility model is uniformly distributed in around spheroid 2, " functioning efficiency " of fluid is improved, the stress that spheroid is sat for 2 times obtains obvious improvement, thus make spheroid 2 very easy seat under very little discharge capacity get back in ball seat surface, reach sealing purpose.Again, spheroid 2 position and the movement locus of the utility model design are erected by ball cage " clamping ", no longer sand setting around spheroid 2, thus ensure that the sealing after spheroid 2 times seats.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (4)
1. a horizontal well ball seat, it is characterized in that: comprise fittings body (1), spheroid (2), ball cage (3), described fittings body (1) is the screwed cylindrical body in two ends, described fittings body (1) inside is disposed with undergauge horn mouth type conical bench (11), expanding internal thread, described undergauge horn mouth type conical bench (11) wide footpath end connects with expanding internal thread, described ball cage (3) is provided with the hollow section of entire body screw thread for outer tube body, described ball cage (3) is arranged on the expanding internal thread place of fittings body, described expanding internal thread and entire body screw thread suitable, described ball cage (3) hollow section inside is provided with puts ball section and the section of blocking, described ball section internal diameter of putting is greater than the section of blocking internal diameter, described spheroid (2) is placed on ball section, put ball section internal diameter to coordinate with spheroid (2) diametric clearance, described ball section of putting connects with undergauge horn mouth type conical bench wide footpath end.
2. horizontal well ball seat according to claim 1, is characterized in that: described spheroid (2) is steel ball.
3. horizontal well ball seat according to claim 1, is characterized in that: described ball cage (3) inwall is milled with multiple radial strip groove (31) vertically.
4. horizontal well ball seat according to claim 1, is characterized in that: described in the section of blocking be undergauge step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520589050.8U CN204851175U (en) | 2015-08-06 | 2015-08-06 | Ball seat for horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520589050.8U CN204851175U (en) | 2015-08-06 | 2015-08-06 | Ball seat for horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851175U true CN204851175U (en) | 2015-12-09 |
Family
ID=54741733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520589050.8U Active CN204851175U (en) | 2015-08-06 | 2015-08-06 | Ball seat for horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851175U (en) |
-
2015
- 2015-08-06 CN CN201520589050.8U patent/CN204851175U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160317 Address after: 100000 Beijing city Chaoyang District Henan Road No. 1 Building No. 4 room 1110 Patentee after: Shun Tai Energy Technology Development Co., Ltd. Address before: 404100 Chongqing Yubei District City Longxing Zhen Ying Long Road No. 19 Patentee before: CHONGQING DINGSHUNLONG ENERGY TECHNOLOGY CO., LTD. |