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1. US20220010647 - Subsea autonomous chemical injection system

Office
United States of America
Application Number 16923061
Application Date 07.07.2020
Publication Number 20220010647
Publication Date 13.01.2022
Grant Number 11261689
Grant Date 01.03.2022
Publication Kind B2
IPC
E21B 33/076
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
33Sealing or packing boreholes or wells
02Surface sealing or packing
03Well heads; Setting-up thereof
068having provision for introducing objects or fluids into, or removing objects from, wells
076specially adapted for underwater installations
E21B 41/04
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41Equipment or details not covered by groups E21B15/-E21B40/95
04Manipulators for underwater operations, e.g. temporarily connected to well heads
CPC
E21B 41/04
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
41Equipment or details not covered by groups E21B15/00 - E21B40/00
04Manipulators for underwater operations, e.g. temporarily connected to well heads
E21B 33/076
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
02Surface sealing or packing
03Well heads; Setting-up thereof
068having provision for introducing objects or fluids into, or removing objects from, wells
076specially adapted for underwater installations
Applicants Halliburton Energy Services, Inc.
Inventors Alan Cameron Clunie
Iain James Shepherd
Quintin John Richterberg
Agents Haynes and Boone, LLP
Title
(EN) Subsea autonomous chemical injection system
Abstract
(EN)

A subsea chemical injection system and method for injecting chemicals into a hydrocarbon production assembly adjacent the seabed wherein a seawater volume flowmeter is utilized to measure seawater pumped through the system and a chemical subsea mass flowmeter is used to measure a chemical injected into the seawater, where the chemical subsea mass flowmeter measures the chemical at a pressure less than the seawater pumped through the system. Based on the chemical subsea mass flowmeter measurement, the flowrate of a chemical injected into the seawater can be adjusted to a predetermined setpoint corresponding to the flowrate of seawater pumped through the system. The chemical subsea mass flowmeter includes a Coriolis tube and chemical injection process pump housed within a pressure vessel. The subsea chemical injection system may be carried on a skid.


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