Is the process of removing crude oil from underground reservoirs so it can be refined and used. It involves several steps, technologies, and equipment, typically grouped into two main phases: primary extraction and secondary/tertiary recovery. Mechanisms include:Solution gas drive: Gas dissolved in oil expands and pushes oil up.Gas cap drive: Gas in a cap above […]

During the running in hole, we encountered a severely damaged pipe — visually confirmed as rotten, with significant structural degradation. Given the condition and to minimize risk of further breakage or fish becoming unrecoverable, we opted for the following recovery approach: Recommended Action:Tool Selection: If casing ID permits, deploy a TDog Overshot equipped with sufficient […]

Involves retrieving a stuck, broken, or left-behind ESP power cable from the wellbore. This is a delicate operation requiring planning and specialized tools due to the cable’s fragility and its often complex placement around tubing or other completion equipment. Here’s a step-by-step process to approach it:

Purpose:Mud pumps circulate drilling fluid (mud) down the drill string and back up the annulus. Regular cleaning is essential to prevent blockages, corrosion, and premature wear. Steps for Cleaning:Shut down the pump and isolate it from the system.Drain all residual mud from the pump casing and fluid end using drain valves.Flush with clean water or […]

Nitrogen pumping is a crucial service in the oil and gas industry, used to support a variety of wellsite operations. Nitrogen (N₂), being an inert, non-flammable, and non-corrosive gas, makes it highly suitable for environments where safety and chemical stability are paramount. Key Applications of Nitrogen Pumping Process OverviewLiquid nitrogen is transported to the wellsite […]

Jarring is a drilling operation technique used to deliver an impact force downhole to free stuck drilling tools or pipe. This technique involves a drilling jar, which is a mechanical or hydraulic tool placed in the drill string. Purpose of Jarring Types of Jarring Tools: Jarring MechanismThe jar is placed above the stuck point in […]

Coiled Tubing is a continuous length of small-diameter steel pipe, typically ranging from 1 inch to 3.25 inches in diameter, wound on a large spool. It can be inserted into a wellbore without having to remove the existing tubing, allowing for live well interventions. Key Features of Coiled Tubing Operations Common Applications: Advantages:Reduced well downtimeCost-effective […]

Operations involves preparing and deploying specialized seismic tools in a well to collect high-resolution seismic data. This process is critical in geophysical exploration and reservoir characterization. Here’s a step-by-step discussion of the logging tool rig-up for a VSP run: Pre-Job Planning and Safety ChecksJob planning: Coordinate with geophysicists, logging engineers, and drilling personnel.Tool string design: […]

Well testing helps determine the reservoir’s capability to produce hydrocarbons—especially in reservoirs with high gas-to-oil ratio (GOR)—and provides data on:Reservoir pressure and temperaturePermeability and skin factorFluid composition and phase behaviorProductivity index and deliverabilityWellbore and reservoir behavior under dynamic conditions Challenges of High-Gas Content:Phase behavior: Gas expands rapidly when pressure drops, affecting flow measurements.Flow instability: High […]

A Glimpse into Subsurface Precision I recently came across a short but powerful visual demonstration that encapsulates the intensity and precision of gun perforation—a vital step in well completion. This process, often hidden thousands of feet below the surface, is essential for establishing communication between the wellbore and the hydrocarbon-bearing formation. In this video, we […]