Service Rig (Workover Rig)

A service rig, also known as a workover rig, is a type of drilling rig that is used in the oil and gas industry to perform maintenance and repair work on existing oil and gas wells. These rigs are designed to be mobile and versatile, and they are typically used to perform a wide range of tasks, including well completion, workover, and well servicing operations.

The service rig is typically made of durable steel and other heavy-duty materials that can withstand the harsh conditions of the oil and gas industry. The rig is typically equipped with a variety of features and components that are designed to make it well-suited for a wide range of tasks. These features and components include: • The derrick: The derrick is the main structural component of the service rig and is used to support the rig's drilling equipment. It is typically made of steel and is designed to be strong and durable. • The substructure: The substructure is the base of the rig and is typically made of steel or other durable materials. It is designed to provide a stable and level platform for the rig's drilling equipment. • The power source: The power source is typically a diesel engine or electric motor that is used to power the rig's drilling equipment. It is typically designed to be efficient and reliable. • The drawworks: The drawworks is the equipment that is used to raise and lower the drilling equipment and is typically powered by the power source. • The rotary table: The rotary table is the equipment that is used to rotate the drilling equipment and is typically powered by the power source. • The mud pump: The mud pump is the equipment that is used to pump drilling fluid to the drilling equipment and is typically powered by the power source.

The engineering specifications for the service rig are: • Maximum hook load: typically up to 1,000,000 lb • Maximum drilling depth: typically up to 30,000 ft • Power source: typically diesel engine or electric motor • Mast height: typically up to 150 ft • Standard: API 4F

The service rig is designed to be both durable and efficient, with a range of features that make it well-suited for use in the oil and gas industry. It typically requires less maintenance than other types of drilling rigs, and its design allows for easy access to internal components for maintenance and repair. Its powerful hook load, drilling depth and height, as well as its versatility and durability make it a great option for maintenance and repair work on existing oil and gas wells.

How does a rod pump work? The familiar pumpjack can be found around the world in oilfields from Texas to Beverly Hills to France. Why are pumpjacks so popular? Why are pumpjacks the go-to technology for the oil and gas industry? In short, pumpjacks (and rod pumps) are an efficient, simple and reliable means of pumping fluid from the subsurface. The pumpjack translates circular motion from an electric or gas engine into an up and down motion of a steel rod string. As the pumpjack motor rotates, it causes the walking beam (and horses head) of the pumpjack to move up and down. Weights are placed on the arms of the pumpjack and positioned to balance the weight of steel of the sucker rods. This reduces the amount of energy required to drive the pumpjack. The rods are pieces of steel (or occasionally fiberglass) which are threaded together to form a long steel pin which travels up and down the length of the well inside the tubing. At the end of the rod string is a pump barrel containing the pump components and the barrel is held in place in the tubing by a pump seating nipple. The pump is seated in the tubing and consists of two check valves. The travelling valve is connected to the sucker rods at the bottom of a plunger, and the standing valve is at the bottom of the pump barrel. The Traveling valve is so named because it travels, or moves, and the standing valve always stays in place as part of the pump barrel. The check valves of both these valves react to the pressure change seen in the pump barrel between the plunger and the standing valve.

What was Causing the Discharge Pressure to Keep Going High? Finding the right equipment at the right time can be a challenge when you are busy optimizing your asset. Like most companies, we have our standard procurement procedures which work just fine most of the time, and fortunately our purchasing department was also quite reasonable whenever issues came up (which always seemed to be at 1am on Saturday nights, for some reason). The turnaround had gone pretty well, a little longer than scheduled, but nothing major had been found during the inspections. The plant had been all buttoned up and the project team was finished, and the production team was starting things up when the compressors tripped on high pressure.

Everyone wants to do a good job or DEG Regeneration Drama I had just been put in charge of the Facilities Engineering department and I found the job great - working with lots of production, maintenance, and operations people. My manager came to me with an issue that a vendor had not done the work they were supposed to do, took the money for the job, delivered the wrong equipment, and refused to help commission and fix the system. The first step was to figure out what this project was all about. The company was using di-etheylene glycol (DEG) to carry corrosion inhibitor from the wells to the gas treatment facility, as well as binding any free water to avoid hydrates. At the facility the glycol was re-generated by heating the glycol to boil off the water from the glycol (returning it to Lean Glycol). The lean DEG was then returned to the field and re-injected at different wellsites. It was mandated two years previous that the existing DEG regeneration system did not meet standards and would have to be replaced with a new system. The first year this was agreed was a tough one in the industry, so it was almost immediately cut from the budget. The following year it was permitted to have study work done, but at a fraction of the required engineering cost. The year that it was scheduled to be installed, engineering began, and consultants were hired to execute the project and pressure was placed on the organization to get this now hyper-critical regulatory issue dealt with.

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Image from https://www.youtube.com/watch?v=DBOazTHYFD8
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