CN201874501U - Underground self-expansion type hanger - Google Patents
Underground self-expansion type hanger Download PDFInfo
- Publication number
- CN201874501U CN201874501U CN2010206481322U CN201020648132U CN201874501U CN 201874501 U CN201874501 U CN 201874501U CN 2010206481322 U CN2010206481322 U CN 2010206481322U CN 201020648132 U CN201020648132 U CN 201020648132U CN 201874501 U CN201874501 U CN 201874501U
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- China
- Prior art keywords
- self
- rubber tube
- expanding
- expanding rubber
- spacing ring
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Abstract
The utility model provides an underground self-expansion type hanger which is applied to petroleum development. An oil pipe or a casing meeting API (American petroleum institute) standard and commonly used in an oil field is adopted, and 3 to 10 self-expansion rubber barrel assemblies prefabricated by a vulcanization process in a factory are sleeved on the outer wall of a pipe body. The self-expansion rubber barrel assemblies comprise inner bushings and self-expansion rubber barrels; through holes are uniformly distributed on the walls of the inner bushings; and the self-expansion rubber barrels are vulcanized in the through holes. The self-expansion rubber barrel assemblies are sleeved on the outer wall of the pipe body in the use field; the distances between two adjacent self-expansion rubber barrel assemblies are identical; and limit rings are respectively sleeved on the pipe body of two ends of the self-expansion rubber barrel assemblies, and are fixed on the pipe body through fastening bolts. The underground self-expansion type hanger has the following effects: under the condition that the oil pipe is not pulled out, the hanger is packed and hung in the oil pipe to realize the well completing process.
Description
Technical field
The utility model relates to the oil development downhole tool, is a kind of down-hole self-expanding formula hanger.
Background technology
At present, along with the oil-gas field development object turns to HTHP, deep layer, resource such as unconventional gradually, on-the-spot completion tool is had higher requirement.Adopt the well-completing process of hanger suspension, seat sealing pipe string to become the effective means of exploitation complicated type petroleum resources.Frame for movement hanger multinomial registered patent, traditional has been widely used in the oil gas well completion construction at present.CN2453119 has introduced a kind of mechanical slips path type well liner hanger, this instrument belongs to the tail tube hanging device of oil drilling well cementation usefulness, and hanger is made up of the dropout assembly on top, the sliding sleeve suspension assembly at middle part and the Compounded rubber plug assembly three parts of bottom.CN2358219 has introduced a kind of slip-type casing tube hanger, mainly form by supporting base, slips housing, polylith slip insert and primary seal circle, wherein the slips housing is supported on the supporting base with its outer bottom, the polylith slip insert is engaged in uniform way with its outer conical surface in the internal conical surface of slips housing, and the primary seal circle is clamped between the interior bottom of supporting base and slips housing.CN2550482 has introduced a kind of double-acting extension hanger, in the hanger body, a cover running tool is arranged, and comprises back-off device, axle, fluid cylinder device, seat hanging sleeve and shear pin cover, and this hanger adopts double-acting seat extension mode.CN8510293 has introduced a kind of control pin formula extension hanger, and its running tool has the dual mechanism of judging that sealing stretching travel that back-off is used and the stroke of checking back-off to use show.More than these mechanical suspension utensils have that complex structure, site operation have a big risk, slip insert weakens casing strength, cost is crossed high shortcoming.These kinds hanger because structural limitations, interior latus rectum is little can't to be changed, for well recovery, well workover have stayed a lot of huge difficulties.
Chinese patent CN201460803U; a kind of chance water is provided, has met oily self-expanding packer; be made up of box cupling, central tube, spacing collar, protection ring, last caulking gum, lower seal rubber and caging bolt, the last caulking gum and the lower seal vulcanization of rubber are on the outer wall of central tube.This sulfuration is not suitable for transportation, stores at chance water, the oily self-expanding packer of chance of central tube, is not suitable for on-the-spot keeping.
The utility model content
The purpose of this utility model is: a kind of down-hole self-expanding formula hanger is provided, adopt the self-expanding elastomeric material, expand by the reaction of self-expanding rubber tube and wellbore fluids and to set, reach the purpose that hangs tail pipe, sealing annular space, and make the interior latus rectum of oil well identical with former sleeve pipe (oil pipe) internal diameter.
The technical solution adopted in the utility model is: down-hole self-expanding formula hanger, mainly form by body, self-expanding rubber tube, box cupling, spacing ring, fastening bolt and neck bush; There is external screw thread at the two ends of body, and by the box cupling that has been threaded, it is characterized in that: be with 3～10 self-expanding rubber tube assemblies on tube wall, self-expanding rubber tube assembly adopts sulfuration process to be prefabricated in factory at an end of body.Self-expanding rubber tube assembly is made up of neck bush and self-expanding rubber tube, and the self-expanding rubber tube vulcanizes on the outer wall of neck bush; Described neck bush is identical with the length of self-expanding rubber tube, and the internal diameter of neck bush is between 73.2～139.9mm, and the external diameter of neck bush is between 76.2～142.9mm; Be evenly distributed with through hole on the wall of neck bush, sulfuration has self-expanding rubber in through hole.
Neck bush mainly plays the effect of supporting the self-expanding rubber tube as the skeleton of self-expanding rubber tube; On body, during suit, can reduce frictional resistance at the scene in addition with body.The effect of through hole is on the liner jacket wall, and in the expansion process of self-expanding rubber, rubber sees through through hole and remains tight the contact with outer surface of tube body, provides tail tube hanging required enough pulling force.
At the scene of using self-expanding rubber tube assembly is enclosed within on the outer wall of body, the distance between adjacent two self-expanding rubber tube assemblies is identical; Be with a spacing ring on the body at self-expanding rubber tube assembly two ends respectively, spacing ring compresses self-expanding rubber tube assembly end outer wall, and by fastening bolt spacing ring is fixed on the body.Finish the assembling of down-hole self-expanding formula hanger.
The maximum suspension force that every series-produced self-expanding rubber tube assembly can bear is measured in sampling in the laboratory.According to the suspension force size of field requirement, can learn needed self-expanding rubber tube component count.Hanger top connects give up pipe nipple and tieback tube, is convenient to give up and the tieback construction.After hanger machines, coat one deck oil resistant and water-resistant material, contact with water with oil in transit, cause unexpected the expansion to prevent packing element at the rubber external surface.
Described body comprises API oil pipe or API sleeve pipe.
The thickness of self-expanding rubber tube is between 12～30mm.
Described spacing ring is a circular cylinder, at an end of spacing ring recessed annular space is arranged; External diameter is arranged less than in the protruding end of self-expanding rubber tube assembly external diameter at the two ends of self-expanding rubber tube, the protruding end of self-expanding rubber tube assembly is in the annular space of spacing ring.
The other end of described spacing ring has the outer chamfering of 30～60 degree.
Described self-expanding rubber is to meet oily self-expanding rubber or meet water self-expanding rubber.This self-expanding rubber has had tested recipe, comprises each amounts of components ratio and preparation method of composition.
The beneficial effects of the utility model: down-hole self-expanding formula hanger, based on the novel hanger of meeting oil or hydro-expansive rubber developing material, can satisfy the completion requirement of complex structural wells such as slim hole well, sidetracking Multilateral Wells, particularly can be used for the through tubing completion construction, promptly under the prerequisite that does not play flowline, the hanger seat seals, is suspended on realizes the completion process in the oil pipe.Have following characteristics: (1) adopts the combining form of modularization, many rubber units body, can be according to indexs such as the suspension force of field requirement, seal pressure differential, main tubing and casing specifications, adjust the quantity of suspension unit, to reach the purpose of effective suspension tail pipe, packing annular space; (2) hanger is assembled at the scene, has both used the assembling fast at the construction field (site) of prefabricated suspension rubber unit, uses very flexible; (3) caulking gum uses simultaneously and meets oil and hydro-expansive rubber, has avoided only using a kind of material problem of seat envelope that can not expand in some pit shaft liquid medium, and has the performance of enough high temperature resistant, corrosive atmospheres; (4) except releasing gadget and tieback tube, do not use complex mechanical construction, the reliability height, the field operation operation obtains simplifying, and construction risk is little, and cost is low; (5) latus rectum of this hanger is bigger, and is identical with the tubing and casing that is connected, and helps improving output, is convenient to being lowered to of later stage power tool.Therefore, the result of use of this type hanger and the scope of application are very wide.Be applicable to the completion requirement of complex structural wells such as slim hole well, sidetracking Multilateral Wells, particularly can be used for the through tubing completion construction.
Description of drawings
Fig. 1 is the utility model down-hole self-expanding formula hanger schematic diagram.
Fig. 2 is the annexation schematic diagram between self-expanding rubber tube 2, neck bush 6 and the spacing ring 4.
Among the figure, 1. body; 2. self-expanding rubber tube; 3. box cupling; 4. spacing ring; 5. fastening bolt; 6. neck bush, 7. through hole.
The specific embodiment
Embodiment 1: with a down-hole self-expanding formula hanger is example, and the utility model is described in further detail.
The utility model down-hole self-expanding formula hanger mainly is made up of body 1, self-expanding rubber tube 2, box cupling 3, spacing ring 4, fastening bolt 5 and neck bush 6.Body 1 is 51/2, and " API sleeve pipe, external diameter are 139.7mm, and length is 6.4m.The two ends of body 1 have 51/2 " the API standard external, at an end of body 1 by the box cupling 3 that has been threaded.
Be with five self-expanding rubber tube assemblies on body 1 outer wall, self-expanding rubber tube assembly adopts sulfuration process to be prefabricated in factory.Self-expanding rubber tube assembly is made up of neck bush 6 and self-expanding rubber tube 2, and 2 sulfurations of self-expanding rubber tube are on the outer wall of neck bush 6; The thickness of self-expanding rubber tube 2 is 30mm.Neck bush 6 is 580mm with the length of self-expanding rubber tube 2; The internal diameter of neck bush 6 is 139.9mm, and the external diameter of neck bush 6 is 142.8mm; Be evenly distributed with 42 through holes 7 on the wall of neck bush 6, the diameter of through hole 7 is 35mm.42 through holes 7 are divided into 6 row, and the quantity in the hole of whenever working is 7.Sulfuration has self-expanding rubber in through hole 7.Self-expanding rubber tube 2 employed materials are to meet water self-expanding rubber.
At the scene of using self-expanding rubber tube assembly is enclosed within on the outer wall of body 1, the distance between adjacent two self-expanding rubber tube assemblies is identical, and distance is 300mm; Be with a spacing ring 4 on the body 1 at self-expanding rubber tube assembly two ends respectively, spacing ring 4 compresses self-expanding rubber tube assembly end outer wall, and by fastening bolt 5 spacing ring 4 is fixed on the body 1.Finish the assembling of down-hole self-expanding formula hanger.
Embodiment 2: with the main difference point of embodiment 1 be: body 1 is 2
7/
8" API oil pipe, external diameter are 72.6mm.The two ends of body 1 have 2
7/
8" API standard external.The internal diameter of neck bush 6 is 73.2mm, and external diameter is 76.2mm.The thickness of self-expanding rubber tube 2 is 18mm.Self-expanding rubber tube 2 employed materials are to meet oily self-expanding rubber.
Claims (5)
1. a down-hole self-expanding formula hanger mainly is made up of body (1), self-expanding rubber tube (2), box cupling (3), spacing ring (4), fastening bolt (5) and neck bush (6); There is external screw thread at the two ends of body (1), at an end of body (1) by the box cupling that has been threaded (3), it is characterized in that: be with 3～10 self-expanding rubber tube assemblies on body (1) outer wall, self-expanding rubber tube assembly is to adopt sulfuration process to be prefabricated in factory; Self-expanding rubber tube assembly is made up of neck bush (6) and self-expanding rubber tube (2), and self-expanding rubber tube (2) vulcanizes on the outer wall of neck bush (6); Described neck bush (6) is identical with the length of self-expanding rubber tube (2), and the internal diameter of neck bush (6) is between 73.2～139.9mm, and the external diameter of neck bush (6) is between 76.2～142.9mm; Be evenly distributed with through hole (7) on the wall of neck bush (6), sulfuration has self-expanding rubber in through hole (7);
At the scene of using self-expanding rubber tube assembly is enclosed within on the outer wall of body (1), the distance between adjacent two self-expanding rubber tube assemblies is identical; Be with a spacing ring (4) respectively on the body (1) at self-expanding rubber tube assembly two ends, spacing ring (4) compresses self-expanding rubber tube assembly end outer wall, and by fastening bolt (5) spacing ring (4) is fixed on the body (1).
2. down-hole self-expanding formula hanger according to claim 1, it is characterized in that: described body (1) comprises API oil pipe or API sleeve pipe.
3. down-hole self-expanding formula hanger according to claim 1, it is characterized in that: the thickness of self-expanding rubber tube (2) is between 12～30mm; The employed self-expanding rubber of self-expanding rubber tube (2) is to meet oily self-expanding rubber or meet water self-expanding rubber.
4. according to claim 1,2 or 3 described down-hole self-expanding formula hangers, it is characterized in that: described spacing ring (4) is a circular cylinder, at an end of spacing ring (4) recessed annular space is arranged; External diameter is arranged less than in the protruding end of self-expanding rubber tube assembly external diameter at the two ends of self-expanding rubber tube (2), the protruding end of self-expanding rubber tube assembly is in the annular space of spacing ring (4).
5. according to claim 1,2 or 3 described down-hole self-expanding formula hangers, it is characterized in that: the other end of described spacing ring (4) has the outer chamfering of 30～60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206481322U CN201874501U (en) | 2010-12-03 | 2010-12-03 | Underground self-expansion type hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206481322U CN201874501U (en) | 2010-12-03 | 2010-12-03 | Underground self-expansion type hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874501U true CN201874501U (en) | 2011-06-22 |
Family
ID=44162424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206481322U Expired - Lifetime CN201874501U (en) | 2010-12-03 | 2010-12-03 | Underground self-expansion type hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874501U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071893A (en) * | 2010-12-03 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground self-expansion hanger |
-
2010
- 2010-12-03 CN CN2010206481322U patent/CN201874501U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071893A (en) * | 2010-12-03 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground self-expansion hanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |