CN2044638U - Underground circulation connector - Google Patents
Underground circulation connector Download PDFInfo
- Publication number
- CN2044638U CN2044638U CN 89200653 CN89200653U CN2044638U CN 2044638 U CN2044638 U CN 2044638U CN 89200653 CN89200653 CN 89200653 CN 89200653 U CN89200653 U CN 89200653U CN 2044638 U CN2044638 U CN 2044638U
- Authority
- CN
- China
- Prior art keywords
- hole
- drilling fluid
- pass prot
- drilling
- piston
- 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.)
- Pending
Links
Images
Abstract
The utility model relates to an improved underground circulation connector (a drilling tool by-pass valve) belonging to subsurface tools in drilling engineering. The improved underground circulation connector is composed of an anti-thrust joint, a lower piston, a sealing ring, an external cylinder, a male pin, etc. The utility model is characterized in that the underground circulation connector is provided with an upper by-pass port and a lower by-pass port, the lower piston is arranged at the lower end of a liner, and a spring is arranged on the lower piston. The underground circulation connector overcomes the insufficiency that drilling fluid can not bypass and circulate when a bit nozzle is closed in prior art, and has simple structure. The utility model has the advantages that the utility model prevents the spouting of the drilling fluid from a drilling column, economizes the drilling fluid, etc.
Description
The utility model relates to a kind of improved down-hole circulating connection (claiming the drilling tool bypass valve again), and it belongs to a kind of downhole tool in the drilling engineering.
In drilling process, because bit nozzle is blocked, influenced the normal circulation of drilling fluid, cause down-hole situation complexity, down-hole accident easily takes place, influenced carrying out smoothly of drilling well work.Be sort this problem out, common way is to connect a drilling tool bypass valve or the similar device of other effect on drilling tool.The PTF drilling tool bypass valve of introducing as domestic periodical " drilling technology " the 4th phase in 1986, it can bit nozzle be blocked and situation about not blocked under, by throwing a steel ball, cut off pin by pump pressure and open by-pass prot, the drilling fluid bypass is circulated.But, PTF drilling tool bypass valve and other effect be device similarly, when creeping into bad ground, in case bit nozzle blocked and just can't open by-pass prot and make drilling fluid bypass circulation, and, because bit nozzle is blocked, when pulling out of hole, the drilling fluid in the drill string will be sprayed and spoiled over when shackle in a large number outward, brings unsafe factor and a lot of inconvenience for the staff on rig floor, simultaneously, also cause a large amount of wastes of drilling fluid.
The purpose of this utility model will provide a kind of improved down-hole circulating connection exactly, and it can be when bit nozzle be blocked, and still can make the circulation of drilling fluid bypass, simultaneously, can also prevent effectively that drilling fluid from spraying and spoiling over outward in drill string.
The purpose of this utility model is achieved in that in the lining lower end settles a lower piston, and spring is housed on the lower piston.In addition, have more than one side through hole on the lower piston.When being blocked, bit nozzle to make drilling fluid bypass circulation time, throw a steel ball along the drilling rod hydrophthalmia to the down-hole by well head, steel ball seat drops on the upper piston top, the upper piston centre bore is sealed, under the effect of pump pressure, cut off pin, upper piston is descending, last by-pass prot is opened, thereby drilling fluid is circulated from last by-pass prot.When pulling out of hole, the effect that drilling fluid is sprayed and spoiled in the drill string outward can be played and shunt drilling fluid, be prevented to the last by-pass prot that is opened again.Because before throwing in steel ball, slush pump quits work, and the pressure in the circulating connection of down-hole is approximately equal to annular pressure, and spring overcomes the deadweight and the frictional resistance of lower piston lower piston is upspring, following by-pass prot is opened, and the drilling fluid in the drill string can pass through by-pass prot down and flow in the well.So after throwing in steel ball, upper piston can descendingly be opened by-pass prot, be blocked after death at bit nozzle thereby overcome existing drilling tool bypass valve, can't open the deficiency of by-pass prot because liquid is incompressible.
When normally creeping into, do not throw in steel ball, upper piston, is remained static on lining by dowel fixes, and last by-pass prot is closed.Drilling fluid is by drill string centre bore (hydrophthalmia) the thrust joint of flowing through, and upper piston centre bore and lower piston centre bore are full of whole down-hole circulating connection.By-pass prot and bit nozzle throttling generation pressure fall under the drilling fluid process, make the pressure in the circulating connection of whole down-hole be higher than annular pressure, it is descending that pressured difference promotes lower piston compression spring, will descend by-pass prot to close, thereby realize that drilling fluid is through the bit nozzle normal circulation.At this moment, the down-hole circulating connection only plays a joint drill string.
Bit nozzle do not blocked or situation about not being blocked under when pulling out of hole, do not throw in steel ball, because this moment, slush pump quit work, the following by-pass prot of down-hole circulating connection is in open mode, so, drilling fluid in the drill string can be through by-pass prot down or/and bit nozzle flow in the well, thereby it can prevent effectively that drilling fluid from spraying and spoiling over outward in drill string, reach to guarantee rig floor cleaning, staff's handling safety and the purpose of saving drilling fluid.
The utility model has overcome prior art under the situation that bit nozzle is blocked, and can't make the deficiency of drilling fluid bypass circulation, and, simple in structure, have the drilling fluid of preventing and in drill string, spray and spoil over outward, save advantages such as drilling fluid.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.
Fig. 1 is the sectional drawing of a kind of concrete structure of the utility model.
Fig. 2 is the sectional view of A-A line among Fig. 1.
Among Fig. 1, Fig. 2: 1---the thrust joint; 2---steel ball; 3---upper piston; 4---lining; 5---sealing ring; 6---lower piston; 7---urceolus; 8---spring; 9---pin.
As shown in Figure 1 and Figure 2, thrust joint (1) links to each other with urceolus (7), upper piston (3) is fixed on the lining (4) by pin (9), lower piston (6) is positioned at the lower end of lining (4), spring (8) is arranged on the lower piston (6), and lower piston has more than one side through hole on (6), has through hole and lower through-hole on the side of urceolus (7).The last through hole of urceolus (7) communicates with through hole on lining (4) side, common constitute go up by-pass prot; Side through hole on the lower through-hole of urceolus (7) and the lower piston (6) constitutes by-pass prot down.Have more than one go up by-pass prot and more than one by-pass prot down at least, being preferably by-pass prot and following by-pass prot respectively has 4.
When normally creeping into, there is not steel ball (2) in the circulating connection of down-hole, last by-pass prot and following by-pass prot are in closed condition, and drilling fluid is directly through the down-hole circulating connection, and at this moment, it only plays drill string.
Will be made drilling fluid bypass circulation time when bit nozzle blocks, because slush pump quits work this moment, following by-pass prot is in open mode.Throw in steel ball (2) by well head downwards along the drilling rod hydrophthalmia, steel ball (2) is located in upper piston (3) upper end, with the centre bore sealing of upper piston (3), as shown in Figure 1.Start slush pump, under the effect of pump pressure, it is descending that upper piston (3) is cut off pin (9), and the shoulder place that goes downwards to lining (4) stops, and last by-pass prot is opened, thereby realize the circulation of drilling fluid through last by-pass prot.In this process, following by-pass prot is in open mode always.When pulling out of hole, drilling fluid flows in the well through last by-pass prot, thereby has prevented that the phenomenon that drilling fluid is sprayed and spoiled in the drill string outward from taking place.Shoulder on the lining (4) plays a part upper piston (3) and lower piston (6) spacing.Lining (4) shoulder upper end should be equal to or greater than the length of upper piston (3) to the distance at through hole center, lining (4) side.
Because the utility model is after slush pump quits work, spring (8) can overcome the deadweight and the frictional resistance of lower piston (6) it is upspring, open down by-pass prot, so, bit nozzle be blocked or situation about not blocking under when pulling out of hole, drilling fluid in the drill string can be through by-pass prot down or/and bit nozzle flow in the well, thereby it can prevent effectively that the phenomenon that drilling fluid is sprayed and spoiled in the drill string outward from taking place.In this process, there is not steel ball (2) in the circulating connection of down-hole.
Claims (5)
1, a kind of down-hole circulating connection of forming by thrust joint (1), upper piston (3), sealing ring (5), urceolus (7) and pin (9) etc., it is characterized in that it has last by-pass prot and following by-pass prot, in the lower end of lining (4) lower piston (6) is arranged, spring (8) is arranged on the lower piston (6).
2, down-hole according to claim 1 circulating connection is characterized in that it has more than one go up by-pass prot and more than one by-pass prot down.
3, according to right 1 described down-hole circulating connection, it is characterized in that on the lining (4) shoulder being arranged, the shoulder upper end is equal to or greater than the length of piston (3) to the distance at through hole center, lining (4) side.
4, down-hole according to claim 1 circulating connection is characterized in that on the lower piston (6) side through hole being arranged.
5,, it is characterized in that upper piston (3) upper end base has steel ball (2) according to claim 1 or 2 or 3 or 4 described down-hole circulating connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89200653 CN2044638U (en) | 1989-01-07 | 1989-01-07 | Underground circulation connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89200653 CN2044638U (en) | 1989-01-07 | 1989-01-07 | Underground circulation connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2044638U true CN2044638U (en) | 1989-09-20 |
Family
ID=4858707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89200653 Pending CN2044638U (en) | 1989-01-07 | 1989-01-07 | Underground circulation connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2044638U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153740A (en) * | 2013-05-14 | 2014-11-19 | 天津大港油田钻采技术开发公司 | Differential pressure type oil sleeve communication valve |
| CN106150432A (en) * | 2016-07-26 | 2016-11-23 | 中国海洋石油总公司 | A kind of window sidetracking multifunctional circulation valve |
| CN109025869A (en) * | 2018-08-22 | 2018-12-18 | 西南石油大学 | A kind of oil/gas drilling fluid circulating device |
-
1989
- 1989-01-07 CN CN 89200653 patent/CN2044638U/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153740A (en) * | 2013-05-14 | 2014-11-19 | 天津大港油田钻采技术开发公司 | Differential pressure type oil sleeve communication valve |
| CN104153740B (en) * | 2013-05-14 | 2017-03-29 | 天津大港油田钻采技术开发公司 | Differential oil jacket coupling cock |
| CN106150432A (en) * | 2016-07-26 | 2016-11-23 | 中国海洋石油总公司 | A kind of window sidetracking multifunctional circulation valve |
| CN109025869A (en) * | 2018-08-22 | 2018-12-18 | 西南石油大学 | A kind of oil/gas drilling fluid circulating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2088931A (en) | Removing cuttings from wellbores | |
| CN105113978A (en) | Single large-diameter reverse circulation air hammer capable of being used for large-size well hole drilling | |
| CN201513131U (en) | Tubular column for drilling plugs in well repairing | |
| CN2044638U (en) | Underground circulation connector | |
| CN205089211U (en) | Anti - circulating air of monomer major diameter hammer for oil and gas drilling | |
| CN205677564U (en) | Positioning flow-guiding type by-passing valve | |
| CN114607289A (en) | Electric pump and jet pump combined lifting process pipe column suitable for high sand content and using method thereof | |
| CN209195272U (en) | A kind of quick drill plug tubing string | |
| CN2381777Y (en) | Hydraulic reciprocal underground controlled valve | |
| CN113818800A (en) | Emergency rescue drilling is along with boring water shutoff device | |
| CN2761834Y (en) | Blow-out prevention valve during drilling | |
| CN2723671Y (en) | Down hole operation blowout retaining ball for water injection well | |
| CN2412088Y (en) | Near bit type drilling tool slurry preventer | |
| CN205714053U (en) | Helicoid hydraulic motor semi-closed piston bypass valve | |
| CN2244086Y (en) | Device for automatically injecting drilling liquid | |
| CN212837692U (en) | Automatic closing grouting device | |
| CN212614628U (en) | Hydraulic balancing device of drilling safety bypass device | |
| CN2411338Y (en) | Two-stage cementing connector | |
| CN2180774Y (en) | Automatic sand flushing pipe column for oil well | |
| CN200996274Y (en) | Current-limiting filter of drilling bit | |
| CN113294117B (en) | Full-time leakage and prevention dual-purpose device for pumping well | |
| CN1274941C (en) | Single mud blowout preventer for drilling well | |
| CN220365547U (en) | Fishing tool | |
| CN219316907U (en) | Quick blowout control device for lifting sucker rod | |
| CN2390025Y (en) | Two-channel countercirculation sand-carrying oil-well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |