[특허]Method for heating treatment fluid using an oil-fired frac water heater

Method for heating treatment fluid using an oil-fired frac water heater 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F24H-001/08 F24H-001/00 E21B-043/267 F24H-001/06 F24H-001/40 F24H-009/20 E21B-043/24 E21B-043/26 F28D-007/00 F28D-007/02 F28D-007/08
출원번호	US-0897883 (2013-05-20)
등록번호	US-9062546 (2015-06-23)
발명자 / 주소	Chandler, Ronald L.
출원인 / 주소	Chandler, Ronald L.
대리인 / 주소	Degenfelder, Jeffrey G.
인용정보	피인용 횟수 : 0 인용 특허 : 46

초록 ▼

The present invention provides a method for utilizing an oil-fired heat exchange system to fracture a subterranean formation at a remote work site to produce oil and gas. The method of the present invention includes using a single-pass tubular coil heat exchanger contained within a closed-bottom firebox having a forced-air combustion and cooling system to heat the treatment fluid. The rig also includes integral fuel tanks, hydraulic and pneumatic systems for operating the rig at remote operations in all weather environments. In a preferred embodiment, the method of the present invention includes using an oil-fired heat exchanger system to heat water on-the-fly (i.e., directly from the supply source to the well head) to complete hydraulic fracturing operations. The method of the present invention also includes adding chemical additives and proppants to the heated treatment fluid prior to injection into the formation.

대표청구항 ▼

1. A method for heating treatment fluid at a remote work site to conduct hydraulic fracturing operations on a well, comprising: drawing treatment fluid from a fluid source;pumping said treatment fluid through a single pass of a heat exchanger, said heat exchanger comprising a tubular coil having a single inlet and a single outlet and being contained within a closed-bottom firebox having an exhaust stack configured near the top of said firebox, wherein said tubular coil includes an upper portion oriented about a first axis and a lower portion oriented about a second axis, said lower portion comprising a helical coil oriented about a horizontal axis so as to define a combustion chamber for receiving a substantially horizontal combustion flow, said combustion chamber being substantially enclosed by said helical tubular coil on all but one opened side, said helical coil including a plurality of traversing lateral tubes which substantially enclose said combustion chamber on a side opposing said opened side, wherein at least one of said traversing lateral tubes is configured directly in line with said substantially horizontal combustion flow;supplying a first pressurized air flow to a plurality of burner assemblies configured in said firebox by fluidly connecting a blower pump to a primary air inlet of each of said plurality of burner assemblies, wherein said blower pump comprises a positive displacement rotary blower;supplying a pressurized liquid fuel flow to said plurality of burner assemblies;heating said treatment fluid during said single pass through said heat exchanger by combusting an air-fuel mixture in said heat exchanger using said plurality of burner assemblies, wherein each of said burner assemblies combines said liquid fuel flow and first pressurized air flow to project an atomized fuel-air spray, which when combusted results in a substantially horizontal combustion flow into said combustion chamber;supplying a second pressurized air flow to a ductwork fluidly connected to said firebox, wherein said second air flow increases the convective heat transfer of thermal energy from said combustion flow to said treatment fluid as said fluid is pumped through said heat exchanger;wherein said treatment fluid is heated to a temperature not greater than 210° F. in ambient atmospheric temperatures below 25° F. while pumping through said heat exchanger at volumetric flow rate of at least 200 gpm. 2. The method of claim 1, further comprising directing said treatment fluid from said outlet of said heat exchanger to a tubular outlet conduit. 3. The method of claim 1, wherein said treatment fluid is heated from 70° F. to 210° F. while pumping through said heat exchanger at a volumetric flow rate of 252 gpm. 4. The method of claim 3, wherein said treatment fluid is water. 5. The method of claim 1, wherein said treatment fluid is heated from 40° F. to 210° F. in ambient atmospheric temperatures below 25° F. while pumping through said heat exchanger at a volumetric flow rate ranging from 200-250 gpm. 6. The method of claim 5, wherein said treatment fluid is water. 7. The method of claim 1, wherein said step of supplying said pressurized liquid fuel flow further comprises supplying said pressurized liquid fuel flow to a fuel pressure control motor valve, wherein said fuel pressure control motor valve controls the temperature of said treatment fluid at said outlet of said heat exchanger by regulating the volume of pressurized liquid fuel flow supplied to each of said burner assemblies in response to a control signal from a controller mechanism. 8. The method of claim 7, wherein said controller mechanism automatically adjusts said control signal in response to a comparison between the temperature of the treatment fluid exiting said heat exchanger outlet and a set point temperature setting on said controller mechanism. 9. The method of claim 8, wherein said controller mechanism senses the temperature of said treatment fluid at said heat exchanger outlet, compares said temperature to a set-point temperature, and adjusts said control signal to said fuel pressure control motor valve to increase or decrease the volume of pressurized fuel supplied to each of said burner assemblies so that said temperature equals said seta point temperature. 10. The method of claim 1, wherein the step of drawing treatment fluid from a fluid source includes activating a hydraulically-powered centrifugal fluid pump in fluid communication with and configured between said fluid source and said inlet.

이 특허에 인용된 특허 (46)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Method for heating treatment fluid using an oil-fired frac water heater 원문보기

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Method for heating treatment fluid using an oil-fired frac water heater 원문보기

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