Table of Contents Toggle What is Bullheading? Situations for Bullheading Key Factors in Bullheading Bullheading Procedure What is Bullheading? Bullheading well control is a well control technique used in specific scenarios during drilling operations to pump an influx back into the formation. This method involves displacing the casing with a sufficient quantity of kill fluid to push well fluids back into the reservoir. Successful bullheading requires unobstructed annulus flow and the ability to inject into the formation without surpassing pressure limitations such as the Maximum Allowable ..read more

A deadline anchor on an oil rig is a critical component used to secure the deadline, which is the non-moving end of the drilling line in a drilling rig system. This piece of equipment ensures the stability and proper tension of the drilling line, which loops around the drawworks (the primary hoisting machinery) and the traveling block (the movable pulley system). Key Functions of a Deadline Anchor Securing the Deadline: The deadline anchor firmly holds the dead line in place, ensuring that it remains stationary and taut during drilling operations. This stability is essential for the safe and ..read more

Mono Trip Gas Lift (MTGL) Completion is an advanced well completion technique introduced by Baker Hughes, designed to significantly improve the efficiency and reduce cost of gas lift operations. In traditional gas lift completions, multiple trips in and out of the wellbore are required to install the lower and upper completion equipment. The MTGL completion technique simplifies this process by allowing the installation of the entire gas lift system and a packer in a single trip. Additionally, cementing operations, packer setting, and cleaning operations can all be done offline once the rig ski ..read more

A triplex pump is a type of reciprocating positive displacement pump that consists of three cylinders and three corresponding pistons or plungers. Here’s how a triplex pump works: Cylinders and pistons: The pump has three cylinders arranged in a horizontal or vertical configuration, each with its own piston or plunger. The pistons are connected to a crankshaft, which converts the rotational motion of the pump’s drive into the reciprocating motion of the pistons. Suction and discharge: Each cylinder has a suction valve and a discharge valve. During the suction stroke, the piston moves outward ..read more

Table of Contents Toggle Step 1 – Perform Essential Calculations Step 2 – Allow Casing Pressure to Increase Step 3 – Maintain Casing Pressure Constant While Bleeding Mud Step 4 – Wait for Casing Pressure to Increase Step 5 – Repeat Mud Bleeding to Maintain Constant Casing Pressure Step 6 – Alternate Between Pressure Holding and Gas Bubble Migration This technical guide provides a detailed procedure for performing the Volumetric Well Control Method. Step 1 – Perform Essential Calculations Prior to executing the Volumetric Control procedure, three key calculations are necessary: Safety F ..read more

The Volumetric Control Method is a well control technique employed to manage bottomhole pressure (BHP) while enabling preparations for well circulation or bullheading kill fluid into the wellbore. It is not intended to completely kill the well, but rather to provide a controlled environment until definitive well control measures can be implemented. The Principle of Controlled Expansion The core principle of Volumetric Control lies in facilitating the controlled expansion of a gas influx as it migrates up the wellbore. This is achieved by maintaining constant casing pressure while strategicall ..read more

Table of Contents Toggle 1. Boyle’s Law: 2. Hydrostatic Pressure: 3. Volume and Height: By understanding and applying these three key principles – Boyle’s Law, hydrostatic pressure, and the volume-height relationship – the Volumetric Well Control Method can be effectively employed to manage gas kicks and maintain well control. The details are shown below. 1. Boyle’s Law: This law states that for a gas at constant temperature, pressure and volume are inversely proportional. Simply put, compressing a gas increases its pressure, while allowing it to expand lowers the pressure. Expressed mat ..read more

Well control situations can get tricky during completion or workover operations. Sometimes, the standard methods involving circulation just won’t work. This can happen due to: Lack of pumps or malfunctioning pumps on site A plugged workstring Kicks encountered while pulling out the drill string or when the tubing is far above the perforations No drill string in the well at all These situations require special well control techniques. The most crucial step, as always, is to shut in the well using the blowout prevention equipment (BOP) immediately upon encountering a kick. Once the well is sh ..read more

Drilling through coal formations, especially in long tangent wellbores, presents a unique set of challenges for the oil and gas industry therefore we need best practices for drilling coal formations. Coal seams are notorious for their potential instability, abnormal formation pressures, and propensity for swelling and sloughing when exposed to water-based drilling fluids. These challenges can lead to various drilling problems, such as stuck pipe incidents, lost circulation events, and well control situations, ultimately compromising the safety and efficiency of drilling operations. Coal over ..read more

In this article, it describes type of mechanical cutters used for fishing operation. When running fishing tools to retrieve stuck or damaged downhole equipment, the pipe or casing often needs to be cut or parted. This allows the fishing tools to latch onto and retrieve the fish. If wireline tools are available, the pipe can be parted using wireline cutting methods to minimize rig time. However, when wireline is not practical, the pipe must be cut using mechanical cutters run on the end of a workstring. Internal Mechanical Cutters Mechanical Internal Cutter One common method is an internal me ..read more