CN202788807U - Liquid level sensor for overflow port in petroleum drilling - Google Patents
Liquid level sensor for overflow port in petroleum drilling Download PDFInfo
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- CN202788807U CN202788807U CN201220490592.6U CN201220490592U CN202788807U CN 202788807 U CN202788807 U CN 202788807U CN 201220490592 U CN201220490592 U CN 201220490592U CN 202788807 U CN202788807 U CN 202788807U
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Abstract
The utility model relates to a liquid level sensor, in particular to a liquid level sensor for an overflow port in the process of petroleum drilling. The liquid level sensor for the overflow port in the petroleum drilling comprises a floating ball (1) and a sensing component, wherein the sensing component comprises a sensing piece (9) and a travel sensing coil (6), the sensing piece (9) is arranged at the top end of a floating ball connecting rod (10), the sensing piece (9) and the travel sensing coil (6) are respectively arranged in a cylinder structure (5) which is correspondingly provided with two cavity bodies in the middle, the travel sensing coil (6) is installed on an upper hollow cavity of the cylinder structure (5), a lower hollow cavity is a sensing cavity (11), the sensing piece (9) at the top end of the floating ball connecting rod (10) floats up and down in the sensing cavity (11), and an installing connecting piece (4) is arranged at the lower end of the cylinder structure (5). The liquid level sensor for the overflow port in the process of petroleum drilling is reasonable in design, simple in structure and strong in practicality. In the process of the petroleum drilling, whether mud is still or circulates, small change of flowing of the mud on the overflow port can be monitored timely, accurately, stably and reliably, especially in an initial stage when well kick and well leakage are formed, and whether the well kick and the well leakage happen or not can be judged qualitatively the first time.
Description
Technical field
The utility model relates to a kind of liquid level sensor, particularly relates to overfall liquid level sensor in a kind of Process of Oil Well Drilling, is used for petroleum drilling engineering, and whether can qualitatively judge in the very first time has well kick leakage to occur.
Background technology
In petroleum exploration and development and drilling process, in time, accurately, stable, monitor the state of overfall mud flow reliably, be automatic grouting and analyze the prerequisite that judges whether that well kick leakage occurs in the trip-out operation.
At present, backflow mud monitoring method commonly used mainly contains two types both at home and abroad: the one, use the duck tongue plate flow meter at overhead backflash, and its principle is by the detection to mud liquid level in the overhead backflash, analyzes and has judged whether that mud backflows out; The 2nd, the variation of being backflowed by artificial observation amount mud at overhead backflash caudal end egress.More than two kinds of methods all can not the very first time in time, accurately, stable, judged whether that mud backflows reliably, reason is that the density, viscosity, temperature, flow velocity of mud in the backflash etc. is all with creeping into and constantly change, easily produce the phenomenons such as mud is piled up, flow velocity is slow, the duck tongue plate flow meter can't be accomplished reliablely and stablely to measure under complex environment like this.And artificial observation can't be accomplished continuity and real-time.
Summary of the invention
The utility model overcomes the prior art deficiency, propose a kind of energy in time, accurately, stable, monitor drilling well overfall mud flow state reliably, especially can qualitatively judge the oil drilling overfall liquid level sensor that whether have well kick leakage to occur in the very first time.
The technical scheme that the utility model adopts:
A kind of oil drilling overfall liquid level sensor, comprise ball float (1), sensing element (6,9), described sensing element comprises sensing chip (9) and the stroke induction coil (6) that is arranged at floating ball rod (10) top, correspondence was provided with in the column structure (5) of two cavitys in the middle of described sensing chip (9) and stroke induction coil (6) were arranged at respectively one, the top cavity of column structure (5) is installed stroke induction coil (6), lower cavity is induction cavity (11), the sensing chip (9) on floating ball rod (10) top fluctuates therein, and described column structure (5) lower end is provided with installation connecting element (4).
Described oil drilling overfall liquid level sensor, be provided with lower casing (2) in the lower end of connector (4), described lower casing (2) bottom is provided with righting mechanism (3), described floating ball rod (10) passes in the middle circular hole of righting mechanism (3), and the sensing chip (9) on floating ball rod (10) top is in the described induction cavity (11).
Described oil drilling overfall liquid level sensor, ball float (1) is hinged with described floating ball rod (10).
Described oil drilling overfall liquid level sensor, contain a pipeful of type base, described bucket type base comprise one with the container chamber of described ball float (1) coupling, bucket type base top is provided with the jointing with installation connecting element (4) Corresponding matching, bucket type base one side be provided with the horn mouth sleeve pipe on through hole corresponding to opening, this side of bucket type base and the connection of being connected of horn mouth sleeve pipe.
Described oil drilling overfall liquid level sensor, column structure top correspondence is provided with top cover (8), and described top cover (8) is provided with connector (7), and described connector (7) connects the output of stroke induction coil (6) by wire.
The beneficial effects of the utility model:
The utility model oil drilling overfall liquid level sensor, reasonable in design, simple in structure, practical.In drilling process, no matter mud is static or circulates, can both be in time, accurately, stable, monitor the minor variations of overfall mud flow reliably, especially whether at the initial stage that well kick and leakage form, can qualitatively judge in the very first time have well kick leakage to occur.
Description of drawings
Fig. 1: one of the utility model oil drilling overfall liquid level sensor structural representation;
Fig. 2: two of the utility model oil drilling overfall liquid level sensor structural representation.
The specific embodiment
Embodiment one: referring to Fig. 1, the utility model oil drilling overfall liquid level sensor, comprise ball float 1 and detect sensing element, described sensing element comprises sensing chip 9 and the stroke induction coil 6 that is arranged at floating ball rod 10 tops, correspondence was provided with in the column structure 5 of two cavitys in the middle of described sensing chip 9 and stroke induction coil 6 were arranged at respectively one, the top cavity of column structure 5 is installed stroke induction coil 6, lower cavity is induction cavity 11, the sensing chip 9 on floating ball rod 10 tops fluctuates therein, and described column structure 5 lower ends are provided with installation connecting element 4.
Embodiment two: referring to Fig. 1, what the oil drilling overfall liquid level sensor of present embodiment and embodiment one were different is, be provided with lower casing 2 in the lower end of connector 4, described lower casing 2 bottoms are provided with righting mechanism 3, described floating ball rod 10 passes in the middle circular hole of righting mechanism (3), and the sensing chip 9 on floating ball rod 10 tops is in the described induction cavity 11.
Embodiment three, embodiment four: referring to Fig. 2, the oil drilling overfall liquid level sensor of these two embodiment from different with embodiment one or embodiment two is respectively, among embodiment one or the embodiment two, installation connecting element 4 and column structure 5 are integral type, the installation connecting element 4 here and column structure 5 are for being flexibly connected, can be external screw thread and the internal thread of mutual coupling, or be provided with the tight sliding connection of elastic protrusion (or buckle) and coupling sunk structure for correspondence.
The utility model oil drilling overfall liquid level sensor can arrange at the column structure top corresponding top cover 8, and to play shielding and protective action, described top cover 8 is provided with connector 7, and described connector 7 connects the output of stroke induction coil 6 by wire.Ball float 1 is hinged with floating ball rod 10.
The utility model oil drilling overfall liquid level sensor, comprise a pipeful of type base, described bucket type base comprise one with the container chamber of described ball float 1 coupling, bucket type base top is provided with the jointing with installation connecting element 4 Corresponding matchings, bucket type base one side be provided with the horn mouth sleeve pipe on through hole corresponding to opening, this side of bucket type base and the connection of being connected of horn mouth sleeve pipe during installation.
The utility model oil drilling overfall liquid level sensor is used law of buoyancy and stroke inductor and is made.When installing and using, the sidewall of the horn mouth sleeve pipe between wellhead blowout preventor and backflash overfall is opened a hole, the corresponding bucket type base of installing.Separated time and backflash overfall base are contour in the level of described bucket type base, and the perforate via openings corresponding with bucket type base one side on the horn mouth sleeve pipe sidewall is consistent.Then the overfall sensor is vertically inserted bucket type base from top to bottom, the jointing of bucket type base top docks (fastening, sealing) with the installation connecting element on the overfall sensor, sensor after fixing is parallel with the horn mouth sleeve pipe, the unsettled centre at bucket type base of the ball float of sensor.
The operating principle of the utility model oil drilling overfall liquid level sensor is: in the drilling process, the lifting meeting of mud level drives ball float one lifting of the overfall liquid level sensor lower end in the bucket type base in the pit shaft, and also can in induction cavity, move up and down by the sensing chip that connecting rod is connected with ball float, the stroke inductor that be installed in the U-shaped groove above the induction cavity this moment will receive the signal that sensing chip moves up and down, sort signal is transferred to control centre just with the form of image or indicator lamp so, makes the driller experience the variation of overfall mud level in the very first time.Slush pump pours into the drilling rod that is connected on the water tap to mud in the high pressure mode, and under High Pressure, the mud in the drilling rod ejects from the hydrophthalmia of drill bit, and the drilling cuttings that mud is carrying the shaft bottom returns overfall from bottom to top from the annular space between drilling rod and the sleeve pipe.When the mud liquid level was higher than the base of overfall, mud will flow to vibrosieve through backflash, and finally flows back to slurry tank, and the mud in the drilling process so moves in circles.When the mud in shaft bottom returns overfall, be installed in the bucket type base on the horn mouth sleeve pipe sidewall between preventer and the overfall and have mud, the overfall liquid level sensor will be experienced by ball float and sensing element the variation of mud level.
Claims (6)
1. oil drilling overfall liquid level sensor, comprise ball float (1), sensing element (6,9), it is characterized in that: described sensing element comprises sensing chip (9) and the stroke induction coil (6) that is arranged at floating ball rod (10) top, correspondence was provided with in the column structure (5) of two cavitys in the middle of described sensing chip (9) and stroke induction coil (6) were arranged at respectively one, the top cavity of column structure (5) is installed stroke induction coil (6), lower cavity is induction cavity (11), the sensing chip (9) on floating ball rod (10) top fluctuates therein, and described column structure (5) lower end is provided with installation connecting element (4).
2. oil drilling overfall liquid level sensor according to claim 1, it is characterized in that: be provided with lower casing (2) in the lower end of connector (4), described lower casing (2) bottom is provided with righting mechanism (3), described floating ball rod (10) passes in the middle circular hole of righting mechanism (3), and the sensing chip (9) on floating ball rod (10) top is in the described induction cavity (11).
3. oil drilling overfall liquid level sensor according to claim 1 and 2, it is characterized in that: column structure top correspondence is provided with top cover (8), described top cover (8) is provided with connector (7), and described connector (7) connects the output of stroke induction coil (6) by wire.
4. oil drilling overfall liquid level sensor according to claim 3 is characterized in that: ball float (1) is hinged with described floating ball rod (10).
5. oil drilling overfall liquid level sensor according to claim 1 and 2, it is characterized in that: contain a pipeful of type base, described bucket type base comprise one with the container chamber of described ball float (1) coupling, bucket type base top is provided with the jointing with installation connecting element (4) Corresponding matching, bucket type base one side be provided with the horn mouth sleeve pipe on through hole corresponding to opening, this side of bucket type base and the connection of being connected of horn mouth sleeve pipe.
6. oil drilling overfall liquid level sensor according to claim 5, it is characterized in that: column structure top correspondence is provided with top cover (8), described top cover (8) is provided with connector (7), and described connector (7) connects the output of stroke induction coil (6) by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220490592.6U CN202788807U (en) | 2012-09-25 | 2012-09-25 | Liquid level sensor for overflow port in petroleum drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220490592.6U CN202788807U (en) | 2012-09-25 | 2012-09-25 | Liquid level sensor for overflow port in petroleum drilling |
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| Publication Number | Publication Date |
|---|---|
| CN202788807U true CN202788807U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220490592.6U Expired - Lifetime CN202788807U (en) | 2012-09-25 | 2012-09-25 | Liquid level sensor for overflow port in petroleum drilling |
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| Country | Link |
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| CN (1) | CN202788807U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482990A (en) * | 2014-11-11 | 2015-04-01 | 杨志龙 | Mud tank ultrasonic wave liquid level sensor clamping and fixing adjustment device |
| CN105464927A (en) * | 2015-12-31 | 2016-04-06 | 重庆耐德节能装备有限公司 | Natural gas hydraulic compression cylinder |
| CN107288620A (en) * | 2017-08-24 | 2017-10-24 | 重庆科技学院 | A kind of oil drilling well head anti-overflow pipe drilling liquid level intelligent detection device |
| CN110775759A (en) * | 2019-10-11 | 2020-02-11 | 湖州师范学院 | Elevator shaft water level monitoring and water inlet early warning method based on Internet of things technology |
-
2012
- 2012-09-25 CN CN201220490592.6U patent/CN202788807U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482990A (en) * | 2014-11-11 | 2015-04-01 | 杨志龙 | Mud tank ultrasonic wave liquid level sensor clamping and fixing adjustment device |
| CN105464927A (en) * | 2015-12-31 | 2016-04-06 | 重庆耐德节能装备有限公司 | Natural gas hydraulic compression cylinder |
| CN105464927B (en) * | 2015-12-31 | 2018-01-02 | 重庆耐德能源装备集成有限公司 | Natural gas liquid force compresses cylinder |
| CN107288620A (en) * | 2017-08-24 | 2017-10-24 | 重庆科技学院 | A kind of oil drilling well head anti-overflow pipe drilling liquid level intelligent detection device |
| CN110775759A (en) * | 2019-10-11 | 2020-02-11 | 湖州师范学院 | Elevator shaft water level monitoring and water inlet early warning method based on Internet of things technology |
| CN110775759B (en) * | 2019-10-11 | 2021-04-30 | 湖州师范学院 | Elevator shaft water level monitoring and water inlet early warning method based on Internet of things technology |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
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| CX01 | Expiry of patent term |