CN103075143A - Method for testing fluid-producing section of horizontal pump well - Google Patents

Abstract

The invention discloses a method for testing the fluid-production section of a horizontal pump well, which relates to the field of testing of fluid-producing sections of horizontal oil field wells. The method comprises the following steps of: connecting a long plunger hollow oil pump to the bottom of an oil pipe, feeding deep into the horizontal well by a design pump depth, and setting the long plunger hollow oil pump in a casing; synchronously feeding a continuous oil pipe and a logging cable deep into the lower part of a segment to be tested on the fluid-producing section of the horizontal well, pressing the ground where the continuous oil pipe is positioned to separate a releasing pipe nipple from the continuous oil pipe, and pulling the continuous oil pipe out; and connecting the upper end of the oil pipe with a reciprocating ground lifting device to perform reciprocating pumping actions, starting a fluid-producing section tester, pulling the logging cable slowly, and moving the fluid-producing section tester upwards for testing during production. According to the method, oil field No.5 casing well completion and fluid-producing section testing of the horizontal well by lifting with an oil sucking machine are realized; and meanwhile, the quantity of used equipment is small, the operation time is short, and the well testing cost is lowered.

Description

A kind of machine horizontal well producing profile testing method of drawing water

Technical field

The present invention relates to the oil development production technical field, particularly relate to oilfield horizontal well producing profile testing field.

Background technology

For horizontal well produced fluid cross section, a large amount of research and experiment work have been done both at home and abroad.Because the specific (special) requirements when the exceptional well body structure of horizontal well and survey production profile, the lifting the when conveying of produced fluid cross section tester and test is the difficult problem of horizontal well produced fluid cross section.At present, the water spraying horizontal well mainly is to carry out the conveying of tester by crawl device or coiled tubing, and the test of production profile is carried out on blowing production limit, limit; Can't blowing, but the large horizontal well horizontal well of production fluid amount mainly is by the gaslift lifting, crawl device or coiled tubing carry out the conveying of tester, and the test of production profile is carried out on gaslift production limit, limit; The production fluid amount is little, adopts large sleeve pipe (9 And more than) or large sleeve pipe (9

And more than) suspension small casing (5

Or 7 ") the horizontal well of completion can utilize dual string to carry out the test of horizontal well production profile, and pumping pipe string carries out lifting, and crawl device or coiled tubing connecting test instrument are transported to the horizontal well test section by test string; " the draw water test of horizontal well production profile of jacketing machine is to utilize simulation oil pumper liquid production section test device to carry out lifting, and crawl device carries tester and passes this device and be delivered to test section, the test of carrying out horizontal well production profile when the simulation oil pumping is produced to 7.

At present, the patented technology of horizontal well produced fluid cross section method has:

(1) preset production fluid section plane test method of mechanical mining horizontal well and special shaft mouth test apparatus, number of patent application is 200810137499.5, the method is first produced fluid cross section tester to be connected with crawl device and to rely on gravity down to kickoff point (KOP), is lowered to pump hanging tube post again, and decentralized wellhead has been installed.Start crawl device traction produced fluid cross section tester to the test section lower end.Pump hanging tube post carries out pumping production during test, and upper portable cable carries out producing profile testing.The method is 5

The lower fragile logging cable of pump hanging tube post pole in the sleeve pipe, simultaneously crawl device in distraction procedure easily irregular because of internal surface of sleeve pipe, rate of deviation is large etc., and factor causes crawl device to be hampered, the test success rate is not high.

(2) machine is adopted horizontal well gas lift method producing profile testing process, number of patent application is: 200810137501.9, the method is to utilize the gaslift flow string to implement lifting, and crawl device connection produced fluid cross section tester passes the gaslift flow string and is delivered to the test section lower end.Ground utilizes nitrogen to carry out lifting, and stable rear upper portable cable carries out producing profile testing.The method is applicable to the larger horizontal well of output, is not suitable for the draw water producing profile testing of horizontal well of the not high machine of output.

The high aqueous level well in oil field is increasing, has affected horizontal well development, has also increased cost.Because of oil, water difference of flowability large, during production at the bottom of the limit water easily enter pit shaft from the good zone of stratum permeability, cause the horizontal well height moisture, and there is local remaining oil enrichment in the relatively poor zone of permeability, is difficult to extraction.Produce the local remaining oil of section for excavating horizontal well, just must find out water exit position and implement shutoff.At present, method is horizontal well to be produced section implement producing profile testing the most accurately and effectively, and the result determines water exit position according to test interpretation.Existing horizontal well produced fluid cross section method is more easily implemented in the horizontal well that sleeve pipe or output are high greatly, and the part oilfield horizontal well all adopts 5

The tubing string completion, and output is not high, utilizes the annulus logging technology to need the setting-up eccentricity well head, and means of delivery is lowered in the annular space difficulty, and it is low to be implemented as power; Utilize the gaslift measuring technology then to require oil well output high; Utilized the pump measuring technology, the restriction of managed column dimension, crawl device can't pass through oil well pump.

Summary of the invention

The present invention seeks to design a kind of new horizontal well produced fluid cross section method, to satisfy oil field 5 in order to solve the difficult problem of oil field high aqueous level well surveying production profile water detection The draw water producing profile testing of horizontal well of the machine that cased hole completion, output are not high.

Step of the present invention is:

1) trips out original production tubing string, instrument in the well testing to be measured, carry out circulation well cleanup, drifting;

2) will have give up, the long-plunger hollow oil-well pump of grappling, packing function is connected to the oil pipe bottom, it is dark to be lowered to the horizontal well design pump, makes the long-plunger hollow oil-well pump setting in sleeve pipe;

3) at an end Connection Release pipe nipple of instrument pipe nipple string, the other end connects horizontal well produced fluid cross section tester, and logging cable links to each other with horizontal well produced fluid cross section tester through release short circuit, instrument pipe nipple string, the other end of coiled tubing bottom Connection Release pipe nipple; Synchronously from being lowered in the oil pipe to the bottom of to be tested section of horizontal well production profile, by coiled tubing ground is suppressed, release nipple and coiled tubing are separated coiled tubing and logging cable, trip out coiled tubing;

4) connect reciprocating type ground lifting appliance in the oil pipe upper end, carry out reciprocal pumping action, formation fluid goes out well head through oil jacket annular space, casing valve; Start produced fluid cross section tester, on slowly, carry test cable, on move produced fluid cross section tester and carry out production limit, limit test jobs.

On produced fluid cross section tester, carry and namely finish once test to the top of to be tested section of production profile, close produced fluid cross section tester, on carry logging cable, make produced fluid cross section tester go out well head.If carry out secondary or test jobs repeatedly, loop 3) and 4) step.

The coiled tubing delivery technology of the present invention by design level well produced fluid cross section tester and the hollow oil-well pump lifting technology during test have been realized oil field 5 The producing profile testing of cased hole completion, oil pumper lifting horizontal well, simultaneously, the equipment of employing is few, the activity duration short, has reduced logging cost, is 5

The producing profile testing water detection that jacketing machine is taken out high aqueous level well provides technical guarantee.

Description of drawings

Fig. 1 is the schematic diagram of tester mode of movement of the present invention.

Fig. 2 is survey production profile schematic diagram of the present invention.

Among the figure: 1-2

Oil pipe; 2-1

Coiled tubing; 3-grappling back-off packer; 4-long-plunger hollow oil-well pump; The 5-release nipple; 6-instrument pipe nipple string; The 7-produced fluid cross section tester; The 8-test cable; The 9-test carriage; 10-continuous oil pipe device car device; 11-ground lifting appliance; The 12-casing valve.

The specific embodiment

As shown in Figure 1, 2, to the producing profile testing operating procedure of water horizontal well:

1, stop the production of well testing to be measured, trip out the original production tubing string, lower Flushing tubular column carries out circulation well cleanup, descends drift size gauge tool to pass to the artificial bottom of a well again, requires the drift size gauge tool external diameter should be less than casing inner diameter 6mm～8mm, and length is not less than 0.8m, and large end need have 60 ° of conical surfaces.

The long-plunger hollow oil-well pump 4 that 2, will have a grappling back-off packer 3 is connected to 2

The bottom of oil pipe 1, it is dark to be lowered to the horizontal well design pump by ground lifting appliance 11, make packer 3 grapplings, setting, give up separately, at this moment oil pipe 1 links to each other with plunger by the top of giving up.

3, at an end Connection Release pipe nipple 5 of instrument pipe nipple string 6, the other end connects horizontal well produced fluid cross section tester 7, logging cable 8 links to each other the other end of coiled tubing 2 bottom Connection Release pipe nipples 5 through release short circuit 5, instrument pipe nipple string 6 with horizontal well produced fluid cross section tester 7.

Then by Operation Tubing Aggregate device 10 with 1

Coiled tubing 2 and logging cable 8 are synchronously from 2

Be lowered in the oil pipe 1 to the bottom of to be tested section of horizontal well production profile.By to 1

Coiled tubing 2 ground are suppressed, and make release nipple 5 and 1

Coiled tubing 2 separately trips out 1

Coiled tubing 2.

4,2

Oil pipe 1 upper end connects reciprocating type ground lifting appliance 11, carries out reciprocal pumping action, and liquid according to definite stroke, the jig frequency of pumping of the daily output of this horizontal well, is proceeded the pumping action after casing valve 12 is fully discharged in pit shaft.Start produced fluid cross section tester 7, carry test cable 8 by test carriage 9 on slowly, on move produced fluid cross section tester 7 and carry out production limit, limit test jobs.

Carry on the produced fluid cross section tester 7 to the top of to be tested section of production profile and namely finish once test, close produced fluid cross section tester 7, by carrying test cable 8 on the test car 9, make produced fluid cross section tester 7 go out well head.

If carry out secondary or test jobs repeatedly, loop 3,4 steps.

Claims (1)

1. machine horizontal well producing profile testing method of drawing water is characterized in that may further comprise the steps:

1) trips out original production tubing string, instrument in the well testing to be measured, carry out circulation well cleanup, drifting;

2) will have give up, the long-plunger hollow oil-well pump of grappling, packing function is connected to the oil pipe bottom, it is dark to be lowered to the horizontal well design pump, makes the long-plunger hollow oil-well pump setting in sleeve pipe;

3) at an end Connection Release pipe nipple of instrument pipe nipple string, the other end connects horizontal well produced fluid cross section tester, and logging cable links to each other with horizontal well produced fluid cross section tester, the other end of coiled tubing bottom Connection Release pipe nipple; Synchronously from being lowered in the oil pipe to the bottom of to be tested section of horizontal well production profile, by coiled tubing ground is suppressed, release nipple and coiled tubing are separated coiled tubing and logging cable, trip out coiled tubing;

4) connect reciprocating type ground lifting appliance in the oil pipe upper end, carry out reciprocal pumping action, formation fluid goes out well head through oil jacket annular space, casing valve; Start produced fluid cross section tester, on slowly, carry test cable, on move produced fluid cross section tester and carry out production limit, limit test jobs.

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