Browse Prior Art Database

Overflow, Heated, Ultrasonic and Air Vented Mud Gas Extraction System

IP.com Disclosure Number: IPCOM000245458D
Publication Date: 2016-Mar-10
Document File: 4 page(s) / 362K

Publishing Venue

The IP.com Prior Art Database

Abstract

The idea disclose in this document proposes a gas trap design that can work in continues or batch by batch mode, aiming a more efficient way to extract gas from drilling mud combining different principles of extraction

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 51% of the total text.

Page 01 of 4

Title:

Overflow, Heated, Ultrasonic and Air Vented Mud Gas Extraction System

Abstract:

The idea disclose in this document proposes a gas trap design that can work in continues or batch by batch mode, aiming a more efficient way to extract gas from drilling mud combining different principles of extraction

Description:

Mud logging is a commonly applied service for the hydrocarbon industry and is referred to as the extraction and measurement of hydrocarbons which are solved in the drilling mud. Measurements are conducted at the surface during drilling operations with a Mass Spectrometer, a Gas Chromatograph or a combination of both. Of particular relevance to the industry are the hydrocarbons which are released from the penetrated lithological units and recorded at the surface once they become evaporated into gaseous phase under atmospheric conditions. Ideally, the measured hydrocarbons are only from the milled formation and can therefore provide highly valuable information when correlated with the corresponding depth and corrected for artifacts like recycled, connection and/or tripping gas.

Depending on the mud and hydrocarbon combination, the amount of hydrocarbons in solution may vary and single components may have a different solubility. Conventional hydrocarbon extraction is accomplished by feeding mud through a vessel with a mechanical agitator and sucking the evaporated hydrocarbons from the headspace of the device (gas trap) towards the measuring unit.

Based on the measured hydrocarbon compositions and the fluid type used for the drilling operation (water based mud, oil based mud and synthetic oil based mud) features like gas/oil contacts and oil/water contacts can be determined. Therefore there is a high need within the oil industry to have reliable measurements of reservoir fluid components.

Currently there is the need to identify not just the relative ratios of different hydrocarbons (C1 to C8) but also the total amount of gas encountered in the drilling mud. In order to accomplish this it is necessary to have a proper way to extract the gas from the drilled mud and quantify it.

The idea in this document proposes a gas trap design that can work in continues or batch by batch mode, aiming a more efficient way to extract gas from drilling mud combining different principles of extraction.

Description of the process

A standard drilling process includes circulating drilling mud through the well to establish well control, cutting removal and bit cooling. When drilling through a medium containing gas, condensate or oil the hydrocarbons are released from the penetrated interval. The released gas is then transported to the surfac...