# US 2014/0151066 A1 · Downhole Hydraulic Control Line > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151066 A1 - Document ID: US20140151066A1 - Status: Published application - Kind: A1 - Application number: 14/089,569 - Filed: 2013-11-25 - Published: 2014-06-05 - Earliest claimed: 2009-05-15 - Assignees: Halliburton Manufacturing and Services Limited - Applicants: Halliburton Manufacturing & Services Limited - Inventors: Michael A. Reid - Web page: https://patentgrep.com/patent/US20140151066A1 ## CPC - E21B 34/06: in wells - E21B 23/0419: {using down-hole motor and pump arrangements for generating hydraulic pressure} - E21B 34/066: {electrically actuated} - E21B 34/10: operated by control fluid supplied from outside the borehole - Y10T 137/86638: Rotary valve - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A downhole hydraulic control tool comprising a substantially tubular body adapted for connection in a tubing string, the body including a throughbore arranged coaxially with a bore of the tubing string and one or more pockets arranged on a wall of the body, the pockets including a hydraulic power source and at least two control lines, wherein the device includes a pump to drive hydraulic fluid through the control lines and a switchable flow mechanism for switching the flow of pumped fluid between the at least two control lines, and a switchable flow mechanism and a method of operating one or more downhole devices from a downhole located hydraulic control tool. ## Claims ### Claim 1 A downhole hydraulic control tool comprising a substantially tubular body adapted for connection in a tubing string, the body including a throughbore arranged coaxially with a bore of the tubing string and one or more pockets arranged on a wall of the body, the pockets including a hydraulic power source and at least two control lines, wherein the tool includes a pump to drive hydraulic fluid through the control lines and a switchable flow mechanism for switching the flow of pumped fluid between the at least two control lines. ### Claim 2 (depends on 1) A downhole hydraulic control tool according to claim 1, wherein the tool includes an electronic module, the electronic module controlling the operation of the pump and the switchable flow mechanism. ### Claim 3 (depends on 2) A downhole hydraulic control tool according to claim 2, wherein the electronic module is programmable so that the tool can be preprogrammed to behave in response to a trigger signal when downhole. ### Claim 4 (depends on 2) A downhole hydraulic control tool according to claim 2, wherein the electronics module includes a stored power supply. ### Claim 5 (depends on 1) A downhole hydraulic control tool according to claim 1, wherein the tool includes a first motor gear assembly to operate the pump. ### Claim 6 (depends on 5) A downhole hydraulic control tool according to claim 5, wherein the tool includes a second motor and gear assembly to operate the switchable flow mechanism. ### Claim 7 (depends on 5) A downhole hydraulic control tool according to claim 5, wherein the switchable flow mechanism is located between the first and a second motor. ### Claim 8 (depends on 1) A downhole hydraulic control tool according to claim 1, wherein the tool includes a pressure sensor acted on by the hydraulic fluid. ### Claim 9 (depends on 8) A downhole hydraulic control tool according to claim 8, wherein the tool includes a chamber in which hydraulic fluid is located and the pressure sensor measures hydraulic fluid pressure in the chamber. ### Claim 10 (depends on 9) A downhole hydraulic control tool according to claim 9, wherein there is a piston at an end of the chamber arranged so that tubing pressure can act upon a side of the piston thereby reducing the volume of the chamber. ### Claim 11 (depends on 8) A downhole hydraulic control tool according claim 8, wherein the pressure sensor is connected to an electronics module to provide a triggering signal. ### Claim 12 (depends on 1) A downhole hydraulic control tool according to claim 1, wherein there are two control lines and the pumped fluid is switched between the control lines. ### Claim at position 13 13-28. (canceled) ### Claim 29 (depends on 1) A method of operating one or more downhole devices from a downhole located hydraulic control tool, the method comprising the steps of: a) locating a hydraulic control tool according to claim 1 in a tubing string; b) locating at least one downhole device adjacent to the hydraulic control tool and connecting control lines of hydraulic control tool to control lines of the at least one downhole device; c) running the tubing string into a well bore; d) varying wellbore fluid pressure in the tubing to create a trigger signal for the hydraulic control tool; and e) operating the at least one downhole device by pumping hydraulic fluid through at least one of the control lines between the hydraulic control tool and the downhole device. ### Claim 30 (depends on 29) A method according to claim 29 further including the step of passing fluid through the throughbore. ### Claim 31 (depends on 29) A method according to claim 29, wherein the trigger signal for the hydraulic control tool is created by varying wellbore fluid pressure in the tubing by applying a predetermined pressure for a predetermined time. ### Claim 32 (depends on 31) A method according to claim 31, wherein the predetermined pressure is within the range 500 to 5000 psi. ### Claim 33 (depends on 32) A method according to claim 32, wherein the predetermined time period is in the range 5 to 10 mins. ### Claim 34 (depends on 29) A method according to claims 29, including the step of operating a fluid switchable flow mechanism in the hydraulic control tool to switch the pumped fluid to a second control line. ### Claim 35 (depends on 34) A method according to claim 34, wherein a second function of the downhole device is operated from the second control line. ### Claim 36 (depends on 34) A method according to claim 34, wherein a further downhole device is actuated from the second control line. ### Claim 37 (depends on 1) A method of operating a plurality of downhole devices from a plurality of downhole located hydraulic control tools, the method comprising the steps of: a) locating a plurality of hydraulic control tools according to claim 1 in a tubing string; b) locating each one of a plurality of downhole devices adjacent to one of the plurality of hydraulic control tools and connecting control lines of the hydraulic control tool to control lines of the adjacent downhole device; c) running the tubing string into a well bore; d) varying wellbore fluid pressure in the tubing to create a trigger signal for at least one of the hydraulic control tools; and e) operating at least one of the plurality of downhole devices by pumping hydraulic fluid through at least one of the control lines between the adjacent hydraulic control tool and the downhole device. ### Claim 38 (depends on 37) A method according to claim 37, further including the steps of: f) further varying wellbore fluid pressure in the tubing to create a trigger signal for at least one further hydraulic control tool; and g) operating a further one of the plurality of downhole devices by pumping hydraulic fluid through at least one of the control lines between the further hydraulic control tool and the further downhole device.