CN2556359Y - Suspension liner two-stage cementing pipe string - Google Patents
Suspension liner two-stage cementing pipe string Download PDFInfo
- Publication number
- CN2556359Y CN2556359Y CN 02237904 CN02237904U CN2556359Y CN 2556359 Y CN2556359 Y CN 2556359Y CN 02237904 CN02237904 CN 02237904 CN 02237904 U CN02237904 U CN 02237904U CN 2556359 Y CN2556359 Y CN 2556359Y
- Authority
- CN
- China
- Prior art keywords
- cementing
- string
- deep well
- stage
- stage cementing
- 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 - Lifetime
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Abstract
The utility model relates to a suspended drilling liner two-stage cementing string in accordance with a cementing technological requirement in a deep well of an oil field. A lower rubber plug (7) is arranged in an oil string (11) between a drilling liner hanger (2) and a tee short connection (8) on a deep well cementing string of a protecting string (10); a two-stage concrete pouring tool (5) is connected with the string (11) in which a ball (6), a hollow rubber plug (4) and the rubber plug (3) of a drilling rod are arranged sequentially. Compared with the prior art, the utility model meets the deep well cementing requirement of the drilling liner two-stage cementing so as to widen the scope of application of the extension hanger. And the utility model has the advantages of simple construction technology, reliable and easy on-site operation.
Description
(1) technical field:
The utility model belongs to the suspension tail pipe two-stage cementing tubing string of boring for oil well down-hole.
(2) background technology:
Deep-well is bored in the oil field, down after the protective casing well cementation, continues drilling well by design again, bore reach behind the purpose well depth under production string.Protective casing end under production string is suspended on uses the drilling liner cementing technology can reduce the sleeve pipe use amount, reduces drilling cost; Annular space mill resistance when reducing well cementation prevents that the leakage accident from taking place.Existing extension hanger can only be finished the one-level well cementation, can not satisfy the deep well cementing requirement of tail pipe two-stage cementing, thereby limit the use of extension hanger.
(3) utility model content:
Technical problem to be solved in the utility model is at the problem that exists in the background technology, and a kind of suspension tail pipe two-stage cementing tubing string that satisfies the deep well cementing technological requirement is provided.
The invention for solving the technical problem can reach by following technical solution: passing through on the deep well cementing tubing string of protective casing, between extension hanger and ball seat short circuit, bottom plug is housed in production string, connect the two stage cementing instrument on the sleeve pipe, ball is housed in it, then refills hollow plug, drilling rod plug.
By the well cementation tubing string of above forecast scheme configuration, it is that ball seat short circuit, two stage cementing instrument, extension hanger and running tool are lowered into precalculated position in the well with drilling rod; Implement tail pipe by terrestrial operation and sit extension and running tool disengagement.Annotate a class g cement, drop into bottom plug and also replace mud, bottom plug successively by behind drilling rod, running tool, extension hanger, the two stage cementing instrument to the ball seat short circuit, bruising, the one-level cementing well finishes.After the one-level well cementation finishes, pitching, ball passes through drill pipe bore, running tool, extension hanger successively to the two stage cementing tool location, builds the pressure, and opens the two stage cementing instrument.Annotate two class g cements, be pressed into the drilling rod plug and replace mud, the drilling rod plug successively by behind drill pipe bore, running tool, the extension hanger and hollow plug be combined with each other, and replaced to the two stage cementing instrument, build the pressure, close the two stage cementing instrument, the secondary cementing finishes.
The utility model is compared with the above-mentioned background technology can have following beneficial effect: the utility model satisfies the deep well cementing requirement of tail pipe two-stage cementing than prior art, thereby has widened the scope of application of extension hanger.And construction technology is simple, reliable, and execute-in-place is convenient.
(4) description of drawings:
Accompanying drawing is that figure is finished in the utility model construction.
(5) specific embodiment:
Below in conjunction with the drawings and specific embodiments will the utility model is described in further detail:
Shown in accompanying drawing, by on the deep well cementing tubing string of protective casing 10, between extension hanger 2 and ball seat short circuit 8,11 li bottom plug 7 is housed in production string, connect two stage cementing instrument 5 on the sleeve pipe 11, ball 6 is housed in it, then refills hollow plug 4, drilling rod plug 3.
In such scheme, also contain on the deep well cementing tubing string by protective casing 10 running tool 1, the well cementation tubing string send into the down-hole with drilling rod 9.Each accessory of being mentioned all is the parts commonly used on the tubing string of in the past cementing the well, and makes up again in order to realize long sealing well, and according to technological requirement, each accessory is packed into by designing program or is connected on the production string 11.
Claims (1)
1, a kind ofly relates to the suspension tail pipe two-stage cementing tubing string that oil field deep well meets the well shaft fixing technology requirement, contain on the deep well cementing tubing string by protective casing (10) drilling rod (9), production string (11) and on running tool (1), extension hanger (2), ball seat short circuit (8), it is characterized in that: between extension hanger (2) and ball seat short circuit (8), bottom plug (7) is housed in production string (11) lining, connect two stage cementing instrument (5) on the sleeve pipe (11), ball (6) is housed in it, then refills hollow plug (4), drilling rod plug (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237904 CN2556359Y (en) | 2002-06-18 | 2002-06-18 | Suspension liner two-stage cementing pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237904 CN2556359Y (en) | 2002-06-18 | 2002-06-18 | Suspension liner two-stage cementing pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556359Y true CN2556359Y (en) | 2003-06-18 |
Family
ID=33711737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02237904 Expired - Lifetime CN2556359Y (en) | 2002-06-18 | 2002-06-18 | Suspension liner two-stage cementing pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556359Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536160A (en) * | 2010-12-24 | 2012-07-04 | 中国石油化工股份有限公司 | Ball seat type rubber plug system for liner cementing |
-
2002
- 2002-06-18 CN CN 02237904 patent/CN2556359Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536160A (en) * | 2010-12-24 | 2012-07-04 | 中国石油化工股份有限公司 | Ball seat type rubber plug system for liner cementing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120618 Granted publication date: 20030618 |