CN206220950U - A flow-collecting and dragging type liquid production profile testing string in the tubing of a horizontal well - Google Patents

Abstract

The utility model provides a pair of liquid section test tubular column is produced to mass flow drag formula in horizontal well oil pipe, mainly utilize oil pipe, the packer, the screen pipe, the cable, the oil-well pump, ease gas mass flow umbrella, the flow tester, moisture tester, pressure thermometer constitutes test tubular column, wherein the packer is respectively in different perforation section upper portion shutoff, perforation section production liquid gets into in the oil pipe from the screen pipe above the packer, through the flow tester, moisture tester, each section fluid production dynamic condition of pressure thermometer test, through oil pipe transport, cable real-time transport test data, it is quick to realize that multistage fracturing low flow horizontal well produces liquid section, accurate test, implement the stable oil of accuse water for the horizontal well later stage and provide effective foundation, for understanding, the evaluation development effect, the adjustment development policy provides important means.

Description

A flow-collecting and dragging type liquid production profile testing string in the tubing of a horizontal well

technical field

The utility model belongs to the technical field of oilfield development, and in particular relates to a flow-collecting and dragging type liquid production profile testing pipe string in oil pipes of horizontal wells in oilfields.

Background technique

With the continuous expansion of the development scale of horizontal wells, the problem of water breakthrough in oil wells increases with the extension of development time while increasing the oil recovery rate. After water breakthrough, the production capacity of oil wells drops rapidly. It is urgent to carry out water search measures in order to implement targeted water shutoff . Since the test section of the horizontal well is horizontal, it is impossible to use the gravity of the instrument itself to send the instrument into the test section. At present, the crawler method is mainly used for testing the fluid production profile of the horizontal section of a horizontal well. The crawler method test instrument is expensive and expensive; during the test process, if there is any falling object in the well, it will cause jamming, resulting in failure to test, affecting the test, and a low success rate (30%).

In addition, the traditional liquid production profile testing process in the horizontal section of the ^horizontal well still has low flow rate and poor response of the instrument under the state of fluid stratification. The corresponding flow rate is 10.6m ³ /d), and the logging vehicle waits for a long time at the well site, resulting in high construction costs and low work efficiency.

Therefore, the fluid production profile test of horizontal wells has not been well and widely carried out, especially the segmental test of the fluid production profile of mechanically produced horizontal wells is more difficult.

Utility model content

The purpose of the utility model is to solve the problems of low success rate, high construction cost and poor corresponding instrumentation in small-flow well sections in the existing liquid production profile test, especially in the segmental test of the liquid production profile of horizontal wells.

For this reason, the utility model provides a flow-collecting and dragging liquid production section test pipe string in the oil pipe of a horizontal well, including the oil pipe and the cable in the oil pipe. Instrument, moisture content tester, pressure thermometer, the upper end of the cable is connected to the upper computer on the ground;

An oil well pump is connected to the upper part of the tubing, and multiple packers are sleeved on the tubing located in the horizontal section of the oil well.

The oil pipe is also connected with a screen, and the screen is located at the lower end of the packer.

The flow-collecting umbrella adopts an overflow-type flow-collecting umbrella.

The collecting umbrella, the flow tester, the water cut tester and the pressure thermometer are all located in the horizontal section of the wellbore.

Coupling-chamfered tubing is used for tubing in well sections with larger inclination angles and horizontal well sections.

Beneficial effects of the utility model: The utility model provides the flow-collecting and dragging liquid production section test string in the horizontal well tubing and its application. Collecting umbrellas, flow testers, water cut testers, and pressure thermometers make up the test string, and the packers are sealed in the upper parts of different perforation sections respectively. The flow tester, water cut tester, and pressure thermometer test the fluid production dynamics of each liquid production section, and the test data is transmitted through oil pipes and cables in real time, so as to realize rapid and accurate testing of the liquid production profile of multi-stage fracturing and small flow horizontal wells. It provides an effective basis for implementing water control and oil stabilization, and provides an important means for understanding and evaluating development effects and adjusting development policies.

The utility model will be described in further detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural diagram of a flow collecting and dragging liquid production profile testing string in the tubing of a horizontal well.

Explanation of reference signs: 1. oil pipe; 2. packer; 3. collecting umbrella; 4. flow tester; 5. oil well pump; 6. water content tester; 7. casing; 8. pressure thermometer; 9 , cable; 10, screen tube.

detailed description

Example 1:

This embodiment provides a flow-collecting and dragging liquid production profile test string in the tubing of a horizontal well as shown in Figure 1, including the tubing 1 and the cable 9 in the tubing 1, and the tubing 1 is provided with a collecting umbrella 3. Flow tester 4, moisture content tester 6, pressure thermometer 8, collector umbrella 3, flow tester 4, moisture content tester 6, pressure thermometer 8 are connected in a series by cables 9 from top to bottom; the upper part of oil pipe 1 An oil well pump 5 is connected, and a plurality of packers 2 are sleeved on the tubing 1 located in the horizontal section of the oil well.

It should be noted that the horizontal section is divided into multiple target intervals by multiple packers 2 , and the target intervals are numbered from bottom to top, namely the first target interval, the second target interval... .

The working process of the flow-collecting and dragging liquid production profile test string in the tubing of a horizontal well is:

After the test string is connected as above, the cable 9 is lowered into the wellbore along with the tubing 1, the tubing 1 is run into the casing 7, and the collecting umbrella 3, the flow tester 4, the water content tester 6, and the pressure thermometer 8 pass through the cable 9. Place it in the first target interval at the bottom of the tubing 1, then set the packer 2, and use the structural characteristics of the packer 2 to realize the hydraulic sealing of the packer 2. At this time, the manifold 3 is placed on the The liquid in the oil jacket annulus enters the oil pipe 1 from the bottom of the oil pipe 1, and the liquid in the first target layer enters the oil pipe 1 and gathers at the collecting umbrella 3 and passes through the flow tester 4 and the water content tester 6. The pressure thermometer 8 collects and records the flow data, water content and pressure temperature data of the liquid in the first target layer. After the collection is completed, the liquid flows through the collecting umbrella 3, and the collecting umbrella 3 is closed to complete the data of the first target layer. Collect, then lift up the cable 9, repeat the above steps, use the cable 9 to obtain the flow data, water content, pressure and temperature data of each liquid production section, and transmit them to the host computer connected to the cable 9 in real time to perform the liquid production profile test, Judging the high water-cut layer section, achieving the purpose of sub-section fluid production profile testing to grasp the downhole fluid situation in time, and overcoming the shortcomings of the existing fluid production profile testing technology. After the implementation of the dragging test method in the outer header of the horizontal well tubing, the positioning of the tubing can be accurately positioned and the success rate is high; and the segmented flow collection and direct measurement can realize the liquid production profile test of the small flow well section. The test efficiency is high and the procedure is simple. It can be applied to the judgment of medium and high water-cut horizontal wells, and then take measures to control water and stabilize oil production, and provide an important means for understanding and evaluating development effects and guiding development policy adjustments.

Example 2:

On the basis of Embodiment 1, the oil pipe 1 is also connected with a screen 10 , and the screen 10 is located at the lower end of the packer 2 . The screen pipe 10 plays the role of sand control, and the production liquid enters the oil pipe 1 from the screen pipe 10, and the fluid production dynamics of each section are tested by the flow tester 4, the water content tester 6, and the pressure thermometer 8, and are transported through the oil pipe and transmitted by the cable in real time Test data to realize rapid and accurate test of fluid production profile of multi-stage fracturing and low-flow horizontal wells.

Example 3:

On the basis of the embodiment 1, the said collecting umbrella 3 adopts the overflow type collecting umbrella. The overflow type collecting umbrella is less affected by gas than the general collecting umbrella, has a certain gas-liquid separation effect, and is more suitable for oil field production, so this embodiment chooses the overflow type collecting umbrella. The collecting umbrella 3, the flow tester 4, the moisture content tester 6, and the pressure thermometer 8 are all located in the horizontal section of the wellbore. Tubing 1 adopts coupling chamfered tubing in the well section and the horizontal well section with the inclination angle greater than 45°.

Example 4:

This embodiment provides an application of a flow collecting and dragging liquid production profile testing string in the tubing of a horizontal well, including the following steps:

Step 1: Treat the wellbore, carry out circulating well flushing and well dredging;

Step 2, connect the flow-collecting dragging type liquid production profile test string in the tubing of the horizontal well, and lower it into the wellbore;

Step 3: Set the packer, lift the cable, and test the fluid production profile.

In this example, the flow-collecting and dragging liquid production profile test string in the tubing of a horizontal well is applied to a fracturing horizontal well, and fracturing is performed in 5 sections. By analyzing the injection-production well pattern and the current production status, it is divided into 3 sections for production. Liquid profile test, the specific implementation steps are as follows:

Treatment of the wellbore: the well is inclined to a depth of 3090m, the length of the horizontal section is 800m, and the inner diameter of the casing is 124.26mm. The Φ134mm casing scraper scrapes the casing inner wall of the whole well section.

Connecting and lowering the pipe string: install the collecting umbrella 3, the flow tester 4, the water content tester 6, and the pressure thermometer 8 on the cable 9 from top to bottom, and then run the cable 9 into the oil pipe 1, and the bottom of the oil pipe 1 The screen pipe 10 is connected, and the cable 9 is lowered into the wellbore together with the oil pipe 1. The collecting umbrella 3, the flow tester 4, the water content tester 6, and the pressure thermometer 8 are all located in the horizontal section of the wellbore.

Set packer: use the structural characteristics of the packer itself to realize the hydraulic seat seal of the packer and separate each production section.

Liquid production profile test: In the concentrating state, the production parameters of each liquid production section measured by the real-time transmission test system (including flow meter, water cut meter and pressure thermometer) are used to obtain downhole production information by means of tubing transportation and cable transmission.

Example 5:

The specific process of treating the wellbore in step 1 is to drill the well to the bottom of the artificial well with the drilling gauge, then backwash the sand, wash the sand to the bottom of the artificial well, and use the casing scraper to scrape the inner wall of the casing of the whole well section. For scraping.

Step two is to proceed as follows:

Connect the current collecting umbrella 3, the flow tester 4, the moisture content tester 6, and the pressure thermometer 8 to the cable 9 from top to bottom, connect the upper end of the cable 9 to the host computer on the ground, and connect the screen tube 10 to the oil pipe 1 bottom, then the cable 9 is lowered into the casing 7 along with the oil pipe 1, and the collecting umbrella 3, the flow tester 4, the water content tester 6, and the pressure thermometer 8 are all located in the horizontal section of the wellbore.

The specific process of step 3 is to use the packer 2 to perform hydraulic setting, separate the fluid-producing sections of the horizontal well, open the collecting umbrella 3, lift the cable 9, and obtain the flow data of each fluid-producing section through the cable 9, The moisture content, pressure and temperature data are transmitted to the host computer connected with the cable 9 in real time.

The utility model provides the flow-collecting and dragging liquid production section test pipe string in the horizontal well oil pipe and its application, mainly using the oil pipe, packer, screen pipe, cable, oil well pump, outgassing umbrella, and flow tester. , water cut tester, and pressure thermometer to form a test string, in which the packer is sealed in the upper part of different perforation sections, and the production fluid in the perforation section above the packer enters the tubing through the flow tester and water cut tester. , Pressure thermometers to test the dynamic production conditions of each stage of fluid, through oil pipes, cables to transmit test data in real time, to realize rapid and accurate testing of fluid production profiles of multi-stage fracturing and low-flow horizontal wells, and provide an effective basis for the implementation of water control and oil stabilization in horizontal wells later. It provides an important means for understanding and evaluating development effects and adjusting development policies.

The above examples are only illustrations of the utility model, and do not constitute a limitation to the protection scope of the utility model. All designs identical or similar to the utility model all belong to the protection scope of the utility model. The components and structures not described in detail in this embodiment are known components and common structures or common means in this industry, and are not described here one by one.

Claims (5)

1. A concentrating and dragging liquid production profile test pipe string in the tubing of a horizontal well, comprising the oil pipe (1) and the cable (9) in the oil pipe (1), characterized in that: the cable (9) is from top to bottom The bottom is connected to the current collecting umbrella (3), the flow tester (4), the moisture content tester (6), the pressure thermometer (8), and the upper end of the cable (9) is connected to the host computer on the ground; An oil pump (5) is connected to the upper part of the oil pipe (1), and a plurality of packers (2) are sleeved on the oil pipe (1) located in the horizontal section of the oil well. 2. The horizontal well tubing in-collection and dragging liquid production profile testing string according to claim 1, characterized in that: the tubing (1) is also connected with a screen (10). 3. The horizontal well tubing internal flow collection and dragging type liquid production profile test pipe string according to claim 1, characterized in that: the flow collection umbrella (3) adopts an overflow type flow collection umbrella. 4. The flow-collecting and dragging liquid production section test pipe string in the horizontal well tubing as claimed in claim 1, characterized in that: the flow-collecting umbrella (3), the flow tester (4), the water cut tester ( 6), pressure thermometers (8) are all located in the horizontal section of the wellbore. 5. The flow collecting and dragging liquid production profile test string in the tubing of a horizontal well as claimed in claim 1, characterized in that: the tubing (1) is used in the well section and the horizontal well section where the inclination angle is greater than 45° Coupling chamfer tubing.