By definition, abnormal pore pressure is any geo-pressure different from the established trend for the given area and depth. This article will introduce the six significant causes of abnormal pressure while drilling. Also, in the following articles, we will discuss its prediction and more. Pressure may be Subnormal pressures present few direct well-control problems. However, …
Hydrocarbon Gas Chromatography Analysis In Oil & Gas article is one of 5 important articles about Mud logging unit equipment. These articles explain in detail the equipment used in standard mud logging units. A chromatograph separates and analyzes hydrocarbons in the ditch gas sample to determine how much of each hydrocarbon is contained in the …
Sand Content Kit A sand content kit is used for measuring the sand content in water-based drilling mud or oil-based drilling mud, comprising a 200-mesh sieve, a plastic funnel, and a graduated glass tube that is calibrated to measure the sand content as a percentage. The 200-mesh sieve is designed to trap particles that are …
This article is one of 5 important articles about Mud logging unit equipment. These articles explain in detail the equipment used in standard mud logging units to detect drilled gas. Surface logging is performed using the returning mud stream to communicate with the bottom of the borehole. There is a general relationship between the kind …
This article is one of 5 important articles about Mud logging unit equipment. These articles explain in detail the equipment used in standard mud logging units. Measured Depth Determination Depth is determined at the “Kelly down” position. This depth is the sum of the lengths of the kelly and the Drill String that are in …
This article is one of 5 important articles about Mud logging unit equipment. These articles explain in detail the equipment used in standard mud logging units. Surface mud logging is not complex in principle, does not interfere with the drilling process, and the results are available almost immediately. The Formation Evaluation Log (Figure 1-1) is …
Surface Mud Logging Basics & Theory Mud Logging was introduced as a commercial service in 1939. The service provides for continuous on-site inspection, detection, and evaluation of the rock units as they are being drilled with regards to correlation and potential hydrocarbon production. Correct methods of obtaining this data and its subsequent evaluation are very …
As we mentioned in the Rig Audit Article, rig inspection is a necessary process that shall be done from time to time. Especially after the rig moving to a new drilling location. Here we have collected drilling & workover rig inspection & maintenance checklists for onshore and offshore rig components (including jack-up rigs & according …
Download now free wellbore schematic excel template which contains drawings and tally templates for almost all tools required for drilling, completion & workover operations. This file is very awesome and helpful to produce high-quality representative drawings for almost all tools during the life cycle of the well. This free excel sheet file contains the following: …
Several procedures are available for improving mud displacements in any oil rig or gas rig and they need to be considered when planning a displacement in order to prevent or minimize fluid contamination. However, operational factors may restrict the use of some of the following procedures: 1 Direct and Indirect Mud / Fluid Displacements The …
