[특허]Above production disposal tool

Above production disposal tool 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-043/40 E21B-043/38
출원번호	US-0511950 (1995-08-07)
발명자 / 주소	Michael Clarence (Pratt KS)
출원인 / 주소	Enviro-Tech Tools, Inc. (Pratt KS 02)
인용정보	피인용 횟수 : 31 인용 특허 : 0

초록 ▼

An above production disposal tool for use in a production well having a lower production formation and an upper disposal formation includes an outer tube body, upper and lower annular seals, an upper tube member, an upper collar having a plurality of outlet port holes, a lower tube member, a lower collar having a plurality of inlet port holes, an upper inner by-pass tube, a lower inner by-pass tube, a middle collar disposed between upper and lower tube portions of the outer tube body and having a plurality of axial passageways and a plurality of transverse ports, and a tubing pump having an intake port located below the production formation. The outer tube body, upper and lower tube members and tubing pump are incorporated in a tubing string disposed in the production well with the outer tube body extending along the disposal formation which is sealed above and below by the annular seals. Desired light fluid enters an inner annular passage defined between the inner by-pass tubes and the outer tube body through the inlet port holes below the lower seal and exits above the upper seal through the outlet port holes, by-passing the disposal formation. Undesired heavier fluid is pumped through the intake port into an interior passage defined by the upper and lower tube members and the upper and lower by-pass tubes and out the transverse ports of the middle collar into the disposal formation.

대표청구항 ▼

An above production disposal tool for use within a casing of a production well having a lower productive formation and an upper disposal formation, said tool comprising: (a) an outer tube body disposed in the well casing such that an outer middle annulus is defined between said outer tube body and the well casing, said outer tube body extending along the disposal formation; (b) a pair of spaced upper and lower sealing means for forming respective upper and lower annular seals between said outer tube body and the well casing, said spaced upper and lower sealing means disposed about spaced upper and lower tube portions of said outer tube body above and below the disposal formation and at opposite ends of said outer middle annulus; (c) upper means disposed in the well casing and being attached to said upper tube portion of said outer tube body and extending upwardly therefrom above said upper annular sealing means such that an outer upper annulus is defined between said upper means and the well casing, said upper means defining a plurality of outlet port holes for discharging a desired lighter fluid flowing upwardly from said outer tube body through said upper means and into said outer upper annulus for discharge up the well casing and from the well; (d) lower means disposed in the well casing and being attached to said lower tube portion of said outer tube body and extending downwardly therefrom below said lower annular sealing means such that an outer lower annulus is defined between said lower means and the well casing, said lower means defining a plurality of inlet port holes for receiving the desired lighter fluid flowing upwardly in said outer lower annulus from the production formation and into said lower means and therefrom to said outer tube body; (e) an upper inner by-pass tube disposed in said outer tube body and having an upper end portion extending into said upper means, said inner by-pass tube defining an upper inner annular passage between said outer tube body and said upper inner by-pass tube communicating with said outlet port holes defined in said upper means; (f) a lower inner by-pass tube disposed in said outer tube body and having a lower end portion extending into said lower means, said lower inner by-pass tube defining a lower inner annular passage between said outer tube body and said lower inner by-pass tube communicating with said inlet port holes defined in said lower means; (g) middle means incorporated in said outer tube body between said upper and lower tube portions thereof and adjacent to said outer middle annulus, said middle means having (i) a plurality of axial passageways defined therein communicating with and interconnecting said upper and lower inner annular passages so that the desired lighter fluid from the productive formation may flow from said outer lower annulus below said lower annular sealing means inward through said inlet port holes of said lower means, upward through said lower and upper inner annular passages, and outward through said outlet port holes of said upper means into said upper outer annulus above said upper annular sealing means, and (ii) a plurality of transverse ports defined therein communicating with an interior passage defined by said upper and lower means and said upper and lower inner by-pass tubes to permit flow of an undesired heavier fluid from within said interior passage outward through said middle means into said outer middle annulus and the disposal formation; and (h) pumping means disposed in the well casing and incorporated in said lower and upper means and said outer tube body and communicating with said interior passage, said pumping means for receiving the undesired heavier fluid flowing downwardly by gravity into said outer lower annulus from the productive formation and for pumping the undesired fluid upwardly through said interior passage and out said transverse ports into said outer middle annulus and the disposal formation concurrently as desired lighter fluids flow upwardly from the productive formation through said outer lower annulus and into said inlet port holes of said lower means.

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