Table of Contents
What is horizontal well completion?
The horizontal well completion with stinger is usually used to control the bottom water cone. Although the pressure profile and the inflow profile along the horizontal wellbore can be divided into two parts by the stinger, these profiles have not really flattened.
What are the methods of well completion?
Well completion incorporates the steps taken to transform a drilled well into a producing one. These steps include casing, cementing, perforating, gravel packing and installing a production tree.
What are the different types of horizontal wells?
Types Of Horizontal Wells
- Long-Radius.
- Medium-Radius.
- Short-Radius.
- Tangent.
- Combination.
What are horizontal wells?
A horizontal well is a type of directional drilling technique where an oil or gas well is dug at an angle of at least eighty degrees to a vertical wellbore. This technique has become increasingly common and productive in recent years.
Why horizontal wells are drilled?
Horizontal drilling is a commonly used technology because drilling at an angle other than vertically can stimulate reservoirs and obtain information that cannot be done by drilling vertically. Horizontal drilling can increase the contact between the reservoir and the wellbore.
How is a horizontal well drilled?
Horizontal drilling is the process of drilling a well from the surface to a subsurface location just above the target oil or gas reservoir called the “kickoff point”, then deviating the well bore from the vertical plane around a curve to intersect the reservoir at the “entry point” with a near-horizontal inclination.
What is well completion and workover?
Well completion and workover. Journal Article Abbott, W; Patton, L – Pet. Eng. Int.; (United States) Completion or workover fluids (well servicing fluids) are those that are placed against the producing formation while well killing, cleaning out, plugging back, stimulating or perforating.
What is cased hole completion?
Cased hole completion Description This method involves running casing down through the production zone, and then cementing it in place. This principally requires preparing the bottom of the hole to the required specifications, running production casing and then making connection between the well bore and the formation.
How does a horizontal well work?
How horizontal wells are drilled?
Most horizontal wells are started by drilling a vertical well. After drilling down to the target rock, the pipe is pulled out of the well and a motor is attached to the drill bit. The motor is fuelled by a flow of drilling mud down the drill pipe, rotating the bit without rotating the entire pipe.
How do horizontal wells work?
How long do horizontal wells produce?
Specifically: Following one year of sales, a horizontal well will have produced about 37 percent of its estimated lifetime oil production and 25 percent of its natural gas. After two years, the well will have produced about 53 percent of its recoverable crude oil and 39 percent of its gas.
Are there any significant aspects of horizontal well completions still being investigated?
Although significant progress will have been made, there will be many significant aspects of horizontal well completions yet to be investigated.
What is the process of drilling a horizontal well?
How Horizontal Drilling Works The process of digging a horizontal well starts by drilling a vertical well. Once the drill bits hit the target rock underneath, the attached pipe is withdrawn and replaced with a mud motor, which is attached to the drill bit.
How do horizontal wells achieve free flow?
Horizontal wells achieve the free flow by drilling into the earth in a direction that intersects the maximum number of fractures. It requires the drilling direction to be at the appropriate angles in relation to the dominant fracture direction.
What is the horizontal technique?
The horizontal technique is used as an alternative method for drilling oil and gas in situations where vertical wells are impossible or the shape of the reservoir is difficult to access. Usually, drilling at non-vertical angles can stimulate oil and natural gas reservoirs in ways that a vertical well