阅读说明：本技术 井下原油含水率监测仪 (Underground crude oil water content monitor ) 是由 刘生权 寿焕根 潘临 于 2019-09-19 设计创作，主要内容包括：本发明涉及一种井下原油含水率监测仪,其结构特征含水率监测仪内管与含水率监测仪接头之间；含水率监测仪接头与含水率监测仪壳体之间均置有O型密封圈；监测仪两端垂直轴线方向均布设圆柱销柱,圆柱销柱嵌在密封圈与销柱卡环之间,由销柱卡环卡锁,最后由压螺与含水率监测仪壳体通过螺纹紧固；压螺外侧；接头上设置卡槽,卡槽装有挡环,防止压螺松动,γ射线源,散、透射探测器,电路组件及电池组件安装在支架组件上,支架组件居于含水率监测仪壳体与含水率监测仪内管组成的环形空间中。本发明结构简单、体积小、安全性好,对井下原油含水率的测量,完全实现含水率0-100%全量程计量而不影响精度。(The invention relates to a downhole crude oil water content monitor, which is structurally characterized in that a water content monitor inner tube is arranged between a water content monitor connector and a water content monitor connector; o-shaped sealing rings are arranged between the joint of the water content monitor and the shell of the water content monitor; cylindrical pin columns are distributed at two ends of the monitor in the direction perpendicular to the axis, are embedded between the sealing rings and the pin column clamping rings, are clamped and locked by the pin column clamping rings, and are finally fastened with the shell of the moisture content monitor through threads by a pressing screw; pressing the outer side of the screw; set up the draw-in groove on the connector, the draw-in groove is equipped with and keeps off the ring, prevents to press the spiral shell not hard up, and gamma ray source loosens, transmission detector, and circuit module and battery pack install on the bracket component, and the bracket component lies in the annular space that moisture content monitor casing and moisture content monitor inner tube are constituteed. The invention has simple structure, small volume and good safety, and can completely realize the full-range measurement of the water content of 0-100% without influencing the precision for the measurement of the water content of the underground crude oil.)

1. The utility model provides an underground crude oil moisture content monitor, includes moisture content monitor joint (1), press spiral shell (2), round pin post snap ring (3), gamma ray source (4), scattered, transmission detector (5), bracket component (6), moisture content monitor casing (7), circuit module (8), battery pack (9), moisture content monitor inner tube (10), cylinder round pin post (11), fender ring (12) and sealing washer (13) are constituteed, characterized by sets up O type sealing washer between moisture content monitor inner tube (10) and moisture content monitor joint (1), put O type sealing washer between moisture content monitor joint (1) and moisture content monitor casing (7); cylindrical pins (11) are distributed at two ends of the moisture content monitor in the direction perpendicular to the axis, the cylindrical pins (11) are embedded between the sealing ring (13) and the pin clamp ring (3), are clamped and locked by the pin clamp ring (3), and are then fastened with the moisture content monitor shell (7) through threads by a pressing screw (2); a clamping groove is arranged on the outer side of the pressing screw (2) and the water content monitor connector (1), and a baffle ring (12) is arranged on the clamping groove to prevent the pressing screw (2) from being loosened; gamma ray source (4), scatter, transmission detector (5), circuit module (8) and battery pack (9) are installed on bracket component (6), and bracket component (6) are in the annular space that moisture content monitor casing (7) and moisture content monitor inner tube (10) are constituteed.

Technical Field

The invention relates to a water content monitor of underground crude oil, in particular to an instrument for detecting the water content of the crude oil of an oil well.

Background

In the work of exploitation, dehydration, gathering, transportation, measurement and sale of crude oil, the water content of the crude oil and the yield of the crude oil are important indexes of oil field production. The monitoring of the water content of the crude oil has important significance for the water outlet and oil outlet positions of the oil well, the estimation of the yield of the crude oil and the prediction of the development life of the oil well. Meanwhile, the monitoring data of the water content of the crude oil is accurately and timely acquired, the working state of an oil outlet well can be reflected, the energy consumption of the oil field is reduced, the cost is reduced, automatic management is realized, and an important role is played. At present, the water content of underground crude oil is monitored by a capacitance method and an impedance method. The capacitance type water content monitor is suitable for the working condition with low water content, while the impedance type water content monitor is suitable for the working condition with high water content, and the water content of the underground water-containing crude oil can not be accurately measured in a full range. In addition, the two crude oil water content monitors working underground need to be externally provided with cables, so that the production cost and the safety risk are increased. Therefore, it is necessary to develop a downhole moisture content detector with high precision suitable for the full range.

Disclosure of Invention

In view of the above, the present invention provides a downhole crude oil water content monitor capable of measuring the crude oil water content and the crude oil yield in a full-scale manner downhole.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a crude oil moisture content monitor in pit, includes that moisture content monitor connects, presses spiral shell, round pin post snap ring, gamma ray source, looses, transmission detector, bracket component, moisture content monitor casing, circuit module, battery pack, moisture content monitor inner tube, cylinder round pin post, fender ring and sealing washer constitute. An O-shaped sealing ring is arranged between the inner tube of the water content monitor and the joint of the water content monitor, and the O-shaped sealing ring is arranged between the joint of the water content monitor and the shell of the water content monitor; cylindrical pin columns are distributed at two ends of the moisture content monitor in the direction perpendicular to the axis, are embedded between the sealing rings and the pin column clamping rings, are clamped and locked by the pin column clamping rings, and are finally fastened with the moisture content monitor shell through threads by a pressing screw; the spiral shell outside is pressed, sets up the draw-in groove on the moisture content monitor connector, and the draw-in groove is equipped with and keeps off the ring, prevents to press the spiral shell pine to detain, and gamma ray source looses, transmission detector, and circuit module and battery pack are installed on the bracket component, and the bracket component resides in the annular space that moisture content monitor casing and moisture content monitor inner tube are constituteed.

The invention has the advantages that:

1. measuring the water content by adopting a gamma ray method, and measuring the water content in a full range of 0-100%; the moisture content monitor is isolated from the measured medium by the inner tube, so that the influence of scaling and wax precipitation of the measured medium on the monitor is avoided. The long-term stable and reliable operation of the moisture content monitor is guaranteed.

2. The underground crude oil water content monitor has the advantages of simple structure, small volume and good safety, and the connector screw thread of the underground crude oil water content monitor is designed according to the standard of 2-7/8 oil pipe connectors and is directly connected with an oil pipe, so that the underground crude oil water content monitor is convenient to measure the crude oil water content in a full-scale manner.

3. And a double-2-layer O-shaped sealing ring is adopted for sealing, so that the sealing and the integrity of the underground crude oil water content monitor are ensured. The shell and the inner tube are made of titanium alloy, and have the characteristics of light weight, high pressure resistance and the like.

4. The monitor is provided with a battery, can continuously supply power for more than one month, does not need to enter a well for power transmission through a cable, and is safe and reliable.

Drawings

FIG. 1 is a schematic structural diagram of the present downhole crude oil water content monitor;

FIG. 2 is a schematic diagram of the measurement of the downhole crude oil water content monitor.

Reference numerals:

1-water content monitor connector 2-pressing screw 3-pin column clamping ring 4-gamma ray source

5-scattering and transmission detector 6-bracket component 7-water content monitor shell

8-circuit assembly 9-battery assembly 10-water content monitor inner tube

11-cylindrical pin 12-baffle ring 13-sealing ring.

Detailed Description

The present invention will be further described with reference to fig. 1 and 2.