Methods and systems for determining and using gas extraction correction coefficients at a well site

摘要

Methods and systems for monitoring, analyzing, and characterizing well bores and reservoir fluids in a subterranean formation are provided. In particular, methods and systems for determining and using correction coefficients for quantitative analysis of gas samples extracted from fluids at a well site based on Fick's laws of diffusion are provided. In one embodiment, the systems include: a gas trap configured to extract one or more gaseous samples from a fluid at a well site; a gas analyzer configured to receive one or more gaseous samples from the gas extraction system and generate data regarding the amount of one or more gas species in the gaseous sample; and an information handling system communicatively coupled to the gas analyzer that is configured to use data received from the gas analyzer to determine an extraction efficiency coefficient for the gas species.

主权项

1. A well site gas extraction and analysis system comprising:
a gas trap configured to extract one or more gaseous samples from a fluid at a well site before the fluid is circulated in a wellbore, the gaseous sample comprising one or more gas species; a gas analyzer configured to receive one or more gaseous samples from the gas extraction system and generate data regarding the amount of the gas species in the gaseous sample; and an information handling system communicatively coupled to the gas analyzer, wherein the information handling system is configured to
receive data from the gas analyzer regarding the amount of the gas species in the gaseous sample, anduse data received from the gas analyzer to determine an extraction efficiency coefficient for the gas specie, wherein the extraction efficiency coefficient is a ratio of the amount of gas extracted from the fluid to the amount of gas originally contained in the fluid.