CN202510112U - Mud pressure pulse generator - Google Patents
Mud pressure pulse generator Download PDFInfo
- Publication number
- CN202510112U CN202510112U CN2011205650690U CN201120565069U CN202510112U CN 202510112 U CN202510112 U CN 202510112U CN 2011205650690 U CN2011205650690 U CN 2011205650690U CN 201120565069 U CN201120565069 U CN 201120565069U CN 202510112 U CN202510112 U CN 202510112U
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- China
- Prior art keywords
- pulser
- pressure
- mud
- pulse generator
- valve
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Abstract
The utility model provides a mud pressure pulse generator. A protecting cap is connected with a pulse generator body through screw threads; a passage between an oil filling hole and the external is plugged by an oil filling hole plug; a pulse generator housing is connected with a drill collar through a mud spray nozzle and a corresponding positioning screw; a valve seat is nested in the pulse generator body; a valve stem is matched with the valve seat to form a stop valve; a mud inlet is formed on the pulse generator body and serves as an annular passage for communicating the inner part of the pulse generator and the inner part of the drill collar; a filter screen is mounted on the pulse generator body and used for preventing impurities in mud from entering the inner part of the pulse generator; a solenoid electromagnet is nested in the pulse generator and used for providing power for the valve stem; a pressure passage is positioned in the pulse generator body; a pressure piston is nested in the pulse generator; a pressure switch is fixed in a cavity body at the back part of the pressure piston; and a signal connector is connected with the pressure switch through a signal wire. The mud pressure pulse generator has the advantages of ingenious concept and simple structure, and is easy to maintain, thereby reducing operation cost.
Description
Affiliated technical field
The utility model relates to the oil instrument field, the wireless well logging pulser structure that especially a kind of petroleum industry drilling well is used.
Background technology
Slim-hole is wireless, and the development of well logging technology level is being represented in directed well logging to a certain extent,
In petroleum industry directional well drilling process, slimhole drilling not only can improve oil recovery gas production effect, improves recovery ratio and output, but also can reduce the drillng operation expense, reduces integrated cost.Yet the development of slimhole drilling, the support that must lean on the directed logging technique of slim-hole.
At present, domestic slim-hole logging technique adopts mostly and in well, bets inclinometer, carries out the original deviational survey method of single multiple spot, perhaps uses numerous and diverse wired deviational survey.Most of advanced persons' wireless deviational survey mode can't be applicable in the slim-hole construction, for example the well of 3.5 inch.Reason is that the wireless skew back mud-pressure pulses generator of traditional sense almost can't use in the space of 3.5 inch.
The utility model content
The purpose of the utility model is to avoid the deficiency of prior art and a kind of mud-pressure pulses generator is provided, and is primarily aimed at the requirement of the wireless directed well logging of slim-hole of above-mentioned 3.5 inch.
The technical scheme that the utility model adopted is: the mud-pressure pulses generator; Comprise helmet, oil filler point plug wire, oil filler point, pulser shell, swivel, valve seat, valve rod, mud entrance, screen pack, solenidal electromagnet, pressure channel, pressure piston, pressure switch and signal connector, helmet and pulser body are through being threaded; The oil filler point plug wire has stopped up oil filler point and extraneous passage; The pulser shell is connected with corresponding dog screw through swivel with drill collar; Valve seat is nested in the pulser body, and valve rod and valve seat fit in a stop valve; Mud entrance is positioned on the pulser body, is the passage of annular space in UNICOM pulser inside and the drill collar, and screen pack is installed on the pulser body, stops that the impurity in the mud gets into pulser inside; Solenidal electromagnet is nested in pulser inside, for valve rod provides power; Pressure channel is positioned at the pulser body, and pressure piston is nested in pulser inside, and pressure switch is fixed in the cavity at pressure piston rear portion, and signal connector is connected with pressure switch through holding wire.
Before using, injects by pulser insulating oil; Insulating oil injects from oil filler point, and solenidal electromagnet is immersed in the insulating oil and works, and pressure piston bottom and insulating oil are communicated with.
Pulser receives the inserting tube control signal; Signal passes to solenidal electromagnet through " signal connector " of pulser below, and solenidal electromagnet pulling valve rod is opened normally close valve; Mud is through the screen pack mud entrance of flowing through in the pulser housing annular space; Valve seat is sprayed onto the pulser outside from swivel, form a pulse signal.
Compared with prior art, the utility model has the advantages that: 1. impulse generator is skillfully constructed, and is simple in structure.Be easy to maintaining; 2. do not re-use traditional non magnetic drill collar and hold pulser, reduced operating cost; 3. can in the slim-hole of 3.5 inch, work, pulse signal is very strong, working stability.Improved the stability of directed well logging; 4. mud balance that is suitable for and well depth scope increase.
Description of drawings
Fig. 1 is that the structure of the utility model connects sketch map;
Fig. 2 is the normally close valve open mode, and the route sketch map falls in mud.
Among the figure: 1 helmet, 2 oil filler point plug wires, 3 oil filler points, 4 pulser shells, 5 swivel; 6 valve seats, 7 valve rods, 8 mud entrances, 9 screen packs, 10 solenidal electromagnets; 11 pressure channels, 12 pressure pistons, 13 pressure switches, 14 signal connectors, A, B are pressure and fall route.
The specific embodiment
Specify the embodiment of the utility model below in conjunction with accompanying drawing.
Inject insulating oil before pulser uses, at first unload oil filler point plug wire 2, insulating oil is injected from diagram oil filler point 3, insulating oil is flowed through illustrated " oil circuit ", let solenidal electromagnet 10 be immersed in the insulating oil and work.Let pressure piston 12 bottoms and insulating oil be communicated with simultaneously.
Pulser is when underground work, and drill collar below mud flows into through pulser housing annular space in the drilling rod is like diagram.After pulser received the inserting tube control signal, signal will pass to solenidal electromagnet 10 through " signal connector " 14 of pulser below, and solenidal electromagnet 10 will spur valve rod 7, and normally close valve is opened.Mud will be through screen pack 9 mud entrance 8 of flowing through in the pulser housing annular space like this, and valve seat 6 falls route A and B is sprayed onto pulser (or drill collar) outside from swivel 5 along pressure, so just forms a pulse signal.This process repeats according to certain rules, will make the mud in the drilling rod produce a series of pressure oscillations, and this fluctuation will be arrived in ground detection.Through cracking these fluctuation signals, thereby obtain the well bore parameter of down-hole.
In addition, the effect of pressure switch 13 is: guarantee to have only when slush pump is worked, could let signal connector and electromagnet be communicated with.Saves energy.Implementation method is following:
When slush pump was started working, the mud pressure in pulser housing (or drill collar) annular space raise, and this elevated pressure will act on the pressure piston 12 through pressure channel 11, and pressure piston 12 is pushed, and caused signal connector and electromagnet to be communicated with.Certainly, when slush pump quit work, the mud pressure in pulser housing (or drill collar) annular space reduced, and pressure piston 12 is upwards promoted by spring will return, the connection of just having broken off signal connector 14 and solenidal electromagnet 10 simultaneously.
3.5 the non magnetic drill collar inner space that the inch slim-hole is used is very little, the traditional pulser of can't having packed into.So the utility model---technical problem to be solved is: change conventional thought, we are designed to one with impulse generator and non magnetic drill collar.Like this, what between helicoid hydraulic motor and drilling rod, install during the construction of 3.5 inch slim-holes orientation will be an impulse generator, rather than non magnetic drill collar.
The mud-pressure pulses that this impulse generator produces is that pressure falls, promptly traditional negative pulse.
Contain a little normally close valve in this impulse generator, through opening this normally close valve, just can pulser inside and the outside annular space of pulser be produced a fluid passage, this normally close valve comes drive controlling by solenidal electromagnet.
This normally close valve in the pulser is opened a time of 0.5 second, will in the standpipe of ground, produce the pressure drop of 30～50PSI.The instantaneous decline of this mud circulation pressure just is called " negative pulse ".
In the mud circulating system, inserting tube passes to drive circuit to the shaft bottom information of surveying with pulse signal, drive circuit this pulse signal convert to impulse generator a series of normally close valve switch motions.Thereby the mud in the drilling rod will produce a series of pressure to fall.Thus, the mud pressure on ground will fluctuate with the signal of regulation.Ground instrument obtains the various data messages in shaft bottom through accepting and analyzing these Pressure Fluctuation Signal.
Claims (3)
1. mud-pressure pulses generator; Comprise helmet, oil filler point plug wire, oil filler point, pulser shell, swivel, valve seat, valve rod, mud entrance, screen pack, solenidal electromagnet, pressure channel, pressure piston, pressure switch and signal connector, it is characterized in that: helmet and pulser body are through being threaded; The oil filler point plug wire has stopped up oil filler point and extraneous passage; The pulser shell is connected with corresponding dog screw through swivel with drill collar; Valve seat is nested in the pulser body, and valve rod and valve seat fit in a stop valve; Mud entrance is positioned on the pulser body, is the passage of annular space in UNICOM pulser inside and the drill collar, and screen pack is installed on the pulser body, stops that the impurity in the mud gets into pulser inside; Solenidal electromagnet is nested in pulser inside, for valve rod provides power; Pressure channel is positioned at the pulser body, and pressure piston is nested in pulser inside, and pressure switch is fixed in the cavity at pressure piston rear portion, and signal connector is connected with pressure switch through holding wire.
2. according to claims 1 described mud-pressure pulses generator, it is characterized in that: inject insulating oil before pulser uses; Insulating oil injects from oil filler point, and solenidal electromagnet is immersed in the insulating oil and works, and pressure piston bottom and insulating oil are communicated with.
3. according to claims 1 described mud-pressure pulses generator, it is characterized in that: pulser receives the inserting tube control signal, and signal passes to solenidal electromagnet through " signal connector " of pulser below; Solenidal electromagnet pulling valve rod; Normally close valve is opened, and mud is through the screen pack mud entrance of flowing through, valve seat in the pulser housing annular space; From swivel, be sprayed onto the pulser outside, form a pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205650690U CN202510112U (en) | 2011-12-30 | 2011-12-30 | Mud pressure pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205650690U CN202510112U (en) | 2011-12-30 | 2011-12-30 | Mud pressure pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510112U true CN202510112U (en) | 2012-10-31 |
Family
ID=47062604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205650690U Expired - Fee Related CN202510112U (en) | 2011-12-30 | 2011-12-30 | Mud pressure pulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510112U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015990A (en) * | 2012-12-26 | 2013-04-03 | 西安思坦仪器股份有限公司 | Downhole mud positive pulse generator |
| CN106224309A (en) * | 2016-08-31 | 2016-12-14 | 中国船舶重工集团公司第七八研究所 | A kind of oil-filled hydraulic system of piston type mud pulse generator |
-
2011
- 2011-12-30 CN CN2011205650690U patent/CN202510112U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015990A (en) * | 2012-12-26 | 2013-04-03 | 西安思坦仪器股份有限公司 | Downhole mud positive pulse generator |
| CN106224309A (en) * | 2016-08-31 | 2016-12-14 | 中国船舶重工集团公司第七八研究所 | A kind of oil-filled hydraulic system of piston type mud pulse generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20161230 |