CN206987806U - A kind of Split drilling well liquid leak position measuring instrument - Google Patents

Abstract

The split type drilling fluid loss position measuring instrument of the utility model comprises a drilling fluid loss position measuring instrument and a self-floating data reading device. Among them: the drilling fluid loss position measuring instrument is mainly composed of a male joint assembly, a data storage compartment, an instrument circuit compartment, a battery compartment, a flow sensor, a temperature sensor, a pressure sensor, a pup joint of the outer cylinder, and an insulating support rod. Butt pin. The self-floating data reading device includes an anti-collision head, a shock absorber, a buoy assembly and a female joint body, wherein the female joint body is provided with a storage and circuit compartment and a docking female pin; the docking female pin is mated with the docking male pin. The measuring instrument part of the utility model is installed in the position near the drill bit in the form of a nipple, records and stores the leakage parameters, and uses the self-floating device to read and analyze the data at any time, which has little impact on the drilling construction and is beneficial Reduce well control risks.

Description

A Split Type Drilling Fluid Loss Position Measuring Instrument

technical field

The utility model relates to a downhole measuring instrument for petroleum drilling, in particular to an instrument for measuring the leakage position of drilling fluid and reading data.

Background technique

During oil and gas drilling, lost circulation is usually a complex and thorny problem. After the leakage occurs, it is necessary to accurately determine the location of the leakage layer as soon as possible, so as to take effective plugging measures in time and ensure the normal drilling. But so far, there is no more accurate method for determining the location of the leak, or some have limitations. my country began to develop leakage measurement instruments in the 1970s. Most of these instruments were developed with the help of the principle of fluid dynamics. It either converts the fluid flow when the leakage occurs into the displacement of the diaphragm for measurement, or uses the turbine flowmeter to measure Principle for flow measurement. In recent years, a technology that uses multiple methods to complement each other to measure the missing position has emerged, and the accuracy has been greatly improved. For example, the patent with the publication number of 102383784A discloses a storage-type comprehensive measurement instrument for leaky layer position. The instrument adopts comprehensive measurement methods such as well temperature, noise and sound waves. The accuracy is improved to a certain extent. The patent with the publication number 101446194A discloses an electromagnetic leakage detection device, which uses an ultrasonic sensor to measure the drilling fluid flow rate, and simultaneously uses an electromagnetic method to measure formation characteristics, with high measurement accuracy and easy operation. However, there are still some problems in these methods. For example, the cable or drill pipe is used to measure after lost circulation, which has certain risks. For example, the collapse of the well wall can easily cause pipe sticking accidents, and the construction is also relatively complicated; After the leakage occurs, it is necessary to carry out the drilling operation, and then go down into the instrument for measurement. This not only increases the risk of well control, but also makes the construction complicated and cumbersome.

Utility model content

The purpose of the utility model is to solve the problems existing in the prior art, and provide a split type drilling fluid leakage position measuring instrument which can be used to identify the exact location of the leakage and can read the data quickly and conveniently.

The technical scheme of the utility model is achieved in that:

A split-type drilling fluid loss position measuring instrument, including a drilling fluid loss position measuring instrument and a data reading device; wherein: the drilling fluid loss position measuring instrument is mainly composed of a male joint assembly 13, a data storage compartment 14, an instrument circuit compartment 16, The battery compartment 17, the flow sensor 15, the temperature sensor 19, the pressure sensor 21 and the short joint 18 of the outer cylinder are composed. The uppermost end of the male joint assembly 13 is equipped with a docking male needle 12, and the male joint assembly 13 is connected with the data storage cabin 14. The data The storage compartment 14 is connected to the instrument circuit compartment 16, and the instrument circuit compartment 16 is connected to the battery compartment 17; the data reading device includes an anti-collision head 1, a shock absorber 2 and a female connector body 4 connected sequentially from top to bottom, wherein the female connector body 4 is provided with a storage and circuit compartment 5 and a docking female pin 7; it is characterized in that: the male joint assembly 13 of the drilling fluid leakage position measuring instrument is connected to the outer cylinder sub-joint 18 through an insulating support rod 20, and the flow sensor 15, The temperature sensor 19 and the pressure sensor 21 are respectively embedded in the grooves on the outer wall of the short joint 18 of the outer cylinder; the data reading device is a self-floating data reading device, which is between the shock absorber 2 and the female joint body 4 There is also a buoy assembly 3 connected between them; the docking female pin 7 is covered with an inner sealing sleeve 8, the inner sealing sleeve 8 is covered with an outer sealing sleeve 9, and the outer sealing sleeve 9 is filled with silicone oil; the docking female of the self-floating data reading device The needle 7 is mated with the docking male needle 12 of the drilling fluid loss position measuring instrument.

The above programs further include:

A sealing valve 10 is connected to the lower end of the outer sealing sleeve 9 of the self-floating data reading device, and a docking lock card 11 is connected to the lower end of the female connector body 4, and the docking lock card 11 and the sealing valve 10 are closed and opened in cooperation.

The male joint assembly 13 of the drilling fluid loss position measuring instrument is provided with an annular protrusion which is plugged and fitted with the docking locking card 11 of the self-floating data reading device.

The flow sensor 15, temperature sensor 19, and pressure sensor 21 of the drilling fluid loss position measuring instrument are distributed at intervals along the axial and circumferential directions of the outer tube nipple 18, and the corresponding insulating support rod 20 connects the male joint assembly 13, data The storage compartment 14, the instrument circuit compartment 16, and the battery compartment 17 are fixedly connected to the shaft center of the outer tube nipple 18; the outer wall of the female joint body 4 of the self-floating data reading device is equipped with a rubber centralizer 6 .

The buoy assembly 3 is assembled by connecting multiple buoys in a docked manner.

The principle of the utility model is: the drilling fluid loss position measuring instrument is installed near the drill bit, and goes downhole with the drilling tool assembly. After the leakage occurs, the leakage well section is measured, and the pressure, flow and temperature data are collected and stored. Then put in the self-floating data reading device, and after starting the pump, use the drilling fluid momentum to send the self-floating data reading device to the position of the drilling fluid loss position measuring instrument. After the male joint is in contact with the docking lock card, the sealing valve is opened, and the male docking needle pierces the inner and outer insulating sleeves and connects with the female docking needle. After the data reading and storage are completed, the pump is stopped. Under the action of the buoyancy of the buoy, the docking male needle is separated from the docking female needle, and the sealing valve is closed to realize the separation of the self-floating data reading device and the drilling fluid loss position measuring instrument, and then float up to the wellhead, and take it out for data analysis.

The utility model has the following advantages:

① Pressure, temperature and flow sensors are embedded on the outer wall of the pup joint, which is conducive to measuring the three parameters of the annular space and improving the accuracy of leaky layer judgment.

②The instrument is installed near the drill bit in the form of a nipple, which can record and store leakage parameters at any time. During the measurement process, it is not necessary to trip all the drilling tools to the surface, which not only reduces the tripping time, but also reduces the risk of well control.

③The self-floating reading device is adopted, which can read the missing parameters in most cases, which is convenient and quick.

④ The self-floating reading device can complete the data reading by two actions of starting the pump and stopping the pump, with few actions, and the instrument is safe and reliable.

⑤Adopt the separate design for measurement and reading, which reduces the time for the reading device to be downhole and ensures the reliability of the instrument.

Description of drawings

Fig. 1 is a partial structural diagram of a self-floating data reading device in the utility model.

Fig. 2 is a partial structural diagram of a drilling fluid loss position measuring instrument in the utility model.

detailed description

The implementation process of the utility model will be described in conjunction with Fig. 1 and Fig. 2 . The anti-collision head 1 of the self-floating data reading device is connected to the shock absorber 2, then connected to the buoy assembly 3, and then connected to the female connector body 4. The storage and circuit compartment 5 in the female connector body 4 is connected to the docking female pin 7, the docking female pin 7 is covered with an inner sealing sleeve 8, the inner sealing sleeve 8 is covered with an outer sealing sleeve 9, the outer sealing sleeve 9 is filled with silicone oil, and the outer sealing sleeve 9. An external sealing valve 10. The lower end of the female joint body 4 is connected with a docking lock card 11. The outer wall of the female joint body 4 is equipped with a rubber centralizer 6 to ensure the smooth docking of the male joint and the female joint.

The drilling fluid loss position measuring instrument is composed of a male joint assembly 13, a data storage compartment 14, an instrument circuit compartment 16, a battery compartment 17, an insulating support rod 20, a flow sensor 15, a temperature sensor 19, a pressure sensor 21 and an outer tube nipple 18 . The uppermost end of the male joint assembly 13 is a docking male pin 12 . Outer cylinder pup joint 18 is made of drill collar, grooves are carved on the outer wall, flow sensor 15, temperature sensor 19, pressure sensor 21 are installed, and holes are drilled to pass through the circuit, and sealed with sealing plugs. An insulating support rod 20 is installed at the opening of the inner wall of the short joint 18 of the outer cylinder, and a circuit is installed inside the insulating support rod 20. One end is connected to three sensors, and the other end of the circuit is connected to the data storage cabin of the measurement assembly; the other end of the insulating support rod is connected to The total cost of the measurement is connected to the body. From top to bottom, the male joint assembly 13 is connected to the data storage compartment 14 in turn, the data storage compartment 14 is connected to the instrument circuit compartment 16 , and the instrument circuit compartment 16 is connected to the battery compartment 17 .

When the drilling fluid loss position measuring instrument and the self-floating data reading device are used, first connect the battery of the drilling fluid loss position measuring instrument to make the instrument in working condition, then install it near the drill bit, and run it downhole with the drilling tool assembly. After the leakage occurs, the leakage well section is measured immediately, and the pressure, flow and temperature data are collected and stored. Then unload the kelly, put in the self-floating data reading device from the wellhead, install the top drill pipe and start the pump, and use the drilling fluid momentum to send the self-floating data reading device to the drilling fluid loss position measuring instrument for docking. After the male joint assembly of the drilling fluid loss position measuring instrument contacts the docking lock card, the sealing valve is opened in conjunction, and the docking male needle pierces the outer insulating sleeve and the inner insulating sleeve and docks with the docking female needle to complete data reading and storage. Then stop the pump, under the action of the buoyancy of the buoy, the male needle and the female needle are disengaged, and the docking lock card is again affected by the male joint assembly, so that the sealing valve is closed in conjunction, thereby realizing a self-floating data reading device and a drilling fluid leakage position measuring instrument Then it floats up to the wellhead from the floating data reading device. After taking it out, the stored data can be analyzed to find out the location of the leakage.

Further illustrated by the above-mentioned embodiments, the utility model adopts an externally embedded measuring nipple to measure and comprehensively analyze the location of the drilling fluid loss by measuring the three parameters of annular space pressure, flow and temperature, so as to accurately obtain the lost zone bit. The instrument is installed near the drill bit in the form of a nipple, records and stores the leakage parameters, and uses the self-floating device to read and analyze the data at any time, which has little impact on drilling construction and is conducive to reducing well control risks.

Claims (5)

1. a kind of Split drilling well liquid leak position measuring instrument, including drilling fluid leakage position measuring instrument and digital independent dress Put；Wherein：Drilling fluid leakage position measuring instrument is mainly by pin end assembly（13）, data storage cabin（14）, equipment circuit cabin （16）, battery flat（17）, flow sensor（15）, temperature sensor（19）, pressure sensor（21）And outer barrel pipe nipple（18）Group Into pin end assembly（13）Topmost equipped with the public pin of docking（12）, pin end assembly（13）With data storage cabin（14）It is connected, number According to storage cabin（14）With equipment circuit cabin（16）It is connected, equipment circuit cabin（16）With battery flat（17）It is connected；Digital independent device Anti- met and discussed including what is be sequentially connected from top to bottom（1）, damper（2）With female joint body（4）, wherein female joint body（4）It is interior Provided with storage and circuit cabin（5）With the female pin of docking（7）；It is characterized in that：The public access of the drilling fluid leakage position measuring instrument Head assembly（13）Pass through insulating support rod（20）With outer barrel pipe nipple（18）It is connected, flow sensor（15）, temperature sensor（19） And pressure sensor（21）Outer barrel pipe nipple is embedded in respectively（18）In cutting on outer wall；The digital independent device is self-floating Digital independent device, it is in damper（2）With female joint body（4）Between be also associated with float component（3）；Dock female pin （7）Overcoating inner seal sleeve（8）, inner seal sleeve（8）Overcoating outer seal sleeve（9）, outer seal sleeve（9）Inside fill silicone oil；The self-floating Docking mother's pin of digital independent device（7）Public affairs pin is docked with the drilling fluid leakage position measuring instrument（12）Grafting coordinates.

2. Split drilling well liquid leak position measuring instrument according to claim 1, it is characterized in that：Read in self-floating data Take the outer seal sleeve of device（9）Lower end connects sealing valve（10）, female joint body（4）Lower end is connected with docking pintle hook lock（11）, it is right Connect pintle hook lock（11）With sealing valve（10）Linkage, which is closed and opened, to be coordinated.

3. Split drilling well liquid leak position measuring instrument according to claim 2, it is characterized in that：The drilling fluid leakage The pin end assembly of position measuring instrument（13）Provided with docking pintle hook lock with the self-floating digital independent device（11）Grafting is matched somebody with somebody The annular lug of conjunction.

4. the Split drilling well liquid leak position measuring instrument according to claim 1,2 or 3, it is characterized in that：The drilling well The flow sensor of liquid leak position measuring instrument（15）, temperature sensor（19）, pressure sensor（21）Along outer barrel pipe nipple （18）Axial and circumferential are spaced apart, corresponding insulating support rod（20）By pin end assembly（13）, data storage cabin （14）With equipment circuit cabin（16）, battery flat（17）It is connected in outer barrel pipe nipple（18）Axle center on；The self-floating digital independent The female joint body of device（4）Outer wall is equipped with rubber centralizer（6）.

5. Split drilling well liquid leak position measuring instrument according to claim 4, it is characterized in that：Float component（3）Adopt Assembled with the more connected modes of floating drum docking.