CN202081883U - Depth encoder used for measuring well depth - Google Patents

Depth encoder used for measuring well depth Download PDF

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Publication number
CN202081883U
CN202081883U CN2011201544495U CN201120154449U CN202081883U CN 202081883 U CN202081883 U CN 202081883U CN 2011201544495 U CN2011201544495 U CN 2011201544495U CN 201120154449 U CN201120154449 U CN 201120154449U CN 202081883 U CN202081883 U CN 202081883U
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China
Prior art keywords
depth
cable
signal
main shaft
encoder
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Expired - Fee Related
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CN2011201544495U
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Chinese (zh)
Inventor
莫福贵
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Beijing Hailan Science & Technology Development Co Ltd
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Beijing Hailan Science & Technology Development Co Ltd
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Priority to CN2011201544495U priority Critical patent/CN202081883U/en
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Abstract

The utility model relates to a depth encoder used for measuring well depth, which comprises a shell, a main shaft, a grating coding plate, a signal regulating circuit and a cable. The main shaft is fixed in the shell through a bearing; the grating coding plate and the signal regulating circuit are arranged outside the main shaft; an optical coupler is arranged close to the grating coding plate; the optical coupler is connected with the signal regulating circuit and provides a detection signal for the signal regulating circuit; an angle coding signal output by the signal regulating circuit is transmitted to an external device through the cable. A theory of the angle coder is also utilized, but the angle encoder can be directly connected with a winch barrel shaft; the signal transmission and the connection of the external device are more convenient and easier, so the depth encoder is an optimized sensor for a well depth tracking and measuring system.

Description

A kind of depth encoder that is used to measure well depth
Technical field
The utility model relates to petroleum industry wireless drilling instrument, is specifically related to a kind of depth encoder that is used to measure well depth.
Background technology
In the directional well work progress of oil drilling industry, well depth follow the tracks of be one very important, and the bigger work of difficulty.Usually making a trip of drilling rod, drilling tool relies on the wire rope pulley system on the rig, and wire rope is fixed and is wrapped on the winch drum of rig, and winch drum and winch drum shaft link together by key and keyway.When the forward and reverse rotation of winch drum, can make the wire rope pulley system drive drilling tool and move up and down.If determine the angle of winch drum shaft rotation, can calculate the distance that drilling tool moves up and down, thereby carry out the mensuration of well depth.The angular transducer axle is connected with the winch drum shaft concentric, and its anglec of rotation and cylinder are in full accord, therefore by the angle of the sensor that takes measurement of an angle, can realize calculating the purpose of well depth.
Because the self structure of oil-well rig particular job environment and winch, the performance of angular encoder and the transmission of signal there is corresponding requirement, and no matter common angular encoder all can not well satisfy this operating mode demand aspect the supporting installation of winch axle or aspect the output transmission of signal.
The utility model content
The utility model in the well depth survey to the demand of angular encoder, a kind of depth encoder that is used to measure well depth is provided.It has still utilized the principle of angular encoder, but can directly be connected with winch drum shaft, and signal transmission and interface are more easy.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of depth encoder that is used to measure well depth, comprise housing, main shaft, the grating encoding dish, signal conditioning circuit and cable, its described main shaft by bearing fixing in described housing, described grating encoding dish and described signal conditioning circuit are installed in the outside of described main shaft, be provided with optocoupler in described grating encoding dish one side, described optocoupler is connected with described signal conditioning circuit and provides detected angle signal to it, and described signal conditioning circuit is converted to angle signal the angular coding signal and arrives external equipment by described cable transmission.
The function of described signal conditioning circuit be will optocoupler non-electric charge quantity signalling by the collection of grating encoding dish become the data signal that can measure after through conditioning, i.e. angular coding signal, and then send into external equipment and handle.
Described cable has the wire braided hose cable cover(ing), and the cable two ends are provided with the steel clamping band of being convenient to connect.
The output of described cable is provided with gang socket.Described main shaft is a stainless steel shaft.
When the utility model specifically uses, be fixedly installed in depth encoder on the winch drum shaft and keep concentric to connect, make the anglec of rotation and the cylinder anglec of rotation of depth encoder in full accord, therefore, both can be calculated as follows out well depth by the angle of metering depth encoder:
Figure 2011201544495100002DEST_PATH_IMAGE002
Wherein, LBe arc length, n is an angle, RIt is radius
Again arc length is converted into well depth.
The beneficial effects of the utility model are: adopt depth encoder of the present utility model, itself and winch drum shaft are supporting easy to connect, reliable operation, and signal can be grown apart from safe transmission by cable.Preferably resolve the difficult problem of well depth survey.
Description of drawings
Fig. 1 looks schematic diagram for structure master of the present utility model;
Fig. 2 is the broken section vertical view of Fig. 1.
In Fig. 1 and Fig. 2,1, housing, 2, main shaft, 3, the grating encoding dish, 4, signal conditioning circuit, 5, optocoupler, 6, cable, 7, cable cover(ing), 8, steel clamping band, 9, gang socket, 10, bearing.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
Shown in Fig. 1 and Fig. 2, a kind of depth encoder that is used to measure well depth, comprise housing 1, main shaft 2, grating encoding dish 3, signal conditioning circuit 4 and cable 6, described main shaft 2 is fixed in the described housing 1 by bearing 10, described grating encoding dish 3 and described signal conditioning circuit 4 are installed in the outside of main shaft 2, be provided with optocoupler 5 in grating encoding dish 3 one sides, described optocoupler 5 is connected with described signal conditioning circuit 4 and provides detected angle signal to it, and described signal conditioning circuit 4 is converted to angle signal the angular coding signal and is transferred to external equipment by described cable 6.
Cable 6 has wire braided hose cable cover(ing) 7, and cable 6 two ends are provided with the steel clamping band of being convenient to connect 8.The output of cable 6 is provided with gang socket 9.
When the utility model is used, the main shaft 2 of depth encoder is connected with winch drum shaft, 1 of housing and rig are fixed, produce angular difference between grating encoder and the optocoupler during winch drum shaft rotation, optocoupler can be experienced the slight change of winch, angular resolution is 7.5 °, make data more accurate, data are sent to outside signal handling equipment by cable 6, this routine depth encoder cable 6 can extend by gang socket 9 again and reaches 30 meters, more conveniently is connected with line concentration controller with oil well.

Claims (4)

1. depth encoder that is used to measure well depth, comprise housing (1), main shaft (2), grating encoding dish (3), signal conditioning circuit (4) and cable (6), it is characterized in that: described main shaft (2) is fixed in the described housing (1) by bearing (10), described grating encoding dish (3) and described signal conditioning circuit (4) are installed in the outside of described main shaft (2), be provided with optocoupler (5) in grating encoding dish (3) one sides, described optocoupler (5) is connected with described signal conditioning circuit (4) and provides detected angle signal to it, and described signal conditioning circuit (4) is converted to angle signal the angular coding signal and is transferred to external equipment by described cable (6).
2. the depth encoder that is used to measure well depth according to claim 1 is characterized in that: described cable (6) has wire braided hose cable cover(ing) (7), and cable (6) two ends are provided with the steel clamping band of being convenient to connect (8).
3. the depth encoder that is used to measure well depth according to claim 1 and 2 is characterized in that: the output of described cable (6) is provided with gang socket (9).
4. the depth encoder that is used to measure well depth according to claim 1 and 2 is characterized in that: described main shaft (2) is a stainless steel shaft.
CN2011201544495U 2011-05-16 2011-05-16 Depth encoder used for measuring well depth Expired - Fee Related CN202081883U (en)

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CN2011201544495U CN202081883U (en) 2011-05-16 2011-05-16 Depth encoder used for measuring well depth

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103296632A (en) * 2013-05-21 2013-09-11 中船澄西船舶修造有限公司 Onboard cable steering device
CN104482902A (en) * 2014-11-12 2015-04-01 宁夏嘉翔自控技术有限公司 Petroleum pipe laying meter-countering method for oilfield drilling
CN106153382A (en) * 2015-03-31 2016-11-23 陈迪华 Depth encoder
CN108266181A (en) * 2018-04-09 2018-07-10 东营仪锦能源科技有限公司 A kind of coal mine drilling machine drilling rod depth measurement device
CN110984966A (en) * 2019-12-25 2020-04-10 大庆宏测技术服务有限公司 Logging cable measurement system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103296632A (en) * 2013-05-21 2013-09-11 中船澄西船舶修造有限公司 Onboard cable steering device
CN104482902A (en) * 2014-11-12 2015-04-01 宁夏嘉翔自控技术有限公司 Petroleum pipe laying meter-countering method for oilfield drilling
CN106153382A (en) * 2015-03-31 2016-11-23 陈迪华 Depth encoder
CN108266181A (en) * 2018-04-09 2018-07-10 东营仪锦能源科技有限公司 A kind of coal mine drilling machine drilling rod depth measurement device
CN108266181B (en) * 2018-04-09 2023-12-29 东营仪锦能源科技有限公司 Drill rod depth measuring device of coal mine drilling machine
CN110984966A (en) * 2019-12-25 2020-04-10 大庆宏测技术服务有限公司 Logging cable measurement system

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Granted publication date: 20111221

Termination date: 20150516

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