Hebei Dingnuo Equipment

Mirajgaon, Ahilya Nagar, Maharashtra

Bow spring centralizer  is deigned for primary cementing, applied in vertical, deviated and horizontal wells where low starting force as high restoring force. It is used to keep casing in the center of wellbore and reduce friction between casing and well bore. Bow spring centralizer consists of several metal strips shaped like a hunting bow and attached to a tool or to the outside of casing. It is a critical step in quality cementing as the lack of proper centralization can lead to severe cementing problems including lack of zonal isolation and improper casing support.

Solid rigid centralizers  are one series of casing centralizers, which are integral part of cementing processing. They are built out of solid steel bar or cast iron with a fixed blade height and are sized to fit a specific casing or hole size. It is available in steel or aluminum materials with spiral or straight blade body construction in standard and customized sizes to match different casing sizes and wellbore conditions. Roller centralizers are also available for customers' requirements. Solid rigid centralizers are available in deviated or horizontal wells. But it is rarely selected in the vertical wells because of the smaller diameter than the wellbore.

Hinged Bolted Stop Collars SC-01-HB Hinged bolted stop collar is intended to lock on the casing without being slipped over the casing and offers quick and easy installation. It has higher holding forces than the centralizer starting force. It utilizes a nut-bolt assembly to fix together and draws the stop collar into a friction grip around the perimeter of the casing. Performance features Can be locked on the casing pipe without having to be slipped on at the end of the casing pipe. The locking mechanism is at 180° of the hinge. Cross-bolt design makes it efficient and user-friendly. Economical stop collars. Suitable for subcritical annular tolerance. Can be installed on any position on the casing. Used to limit the axial movement of centralizers and cement baskets Available in 4-1/2" to 20".

Float collar and float shoe  are important floating equipment in petroleum and natural gas fields. They are used to guide the casing to set in the hole and ensure the quality of cementing. They are widely used in the lower section of the well to help decrease strain on the derrick while directing packaging past edges and bog zones in the opening. The float shoe contains a backpressure valve that prevent fluids from entering the casing while the pipe is lowered into the hole and prevents cement from flowing back into the casing after placement, while enabling circulation down through the casing. The float collar include a backpressure valve and serve basically the same function as the float shoe. The float collar is run in a casing assembly, usually several joints above the float shoe. It provide a seat for the cement plugs, to help top plugs shuts off fluid flow and prevents over-displacement of the cement. The space between the float shoe and float collar provides a containment area to entrap the likely-contaminated fluids from the wiping action of the cementing plug, securing the contaminated fluid away from the shoe where a strong cement bond is of primary importance. Contact UsMore Information  

Cementing plugs  are used to remove the mud during cementing operations. Top cementing plugs and bottom cementing plugs are used in the cementing process. The top and bottom cementing plus general have different colors (bottom plugs are red and top plugs are black) in production for easy usage in operation. The top cementing plug has a solid body that provides positive indication of contact with cementing floating collar and bottom plug through an increase in pump pressure. The bottom cementing plug with a hollow body is installed ahead of the cement slurry to minimize contamination by fluids inside the casing prior to cementing.

Sucker rod centralizer  is mainly used in pumping well to centralize sucker rod and reduce the friction between tubing and sucker rod. Due to the elastic deformation of sucker rod, rod and oil tube wall is easy to produce friction and sucker rod break easily. when rod go up and down inside of the tubing. Sucker rod centralizer has strong flexibility and larger outer diameter to centralize sucker rod. The centralizer casing has high strength and wear resistant structure, so when contact with oil tube, it can reduce the friction.

API casing pipe  is produced according to the API 5CT standard. It is most often used in underground construction projects to encase or protect utility lines from being damaged. It is widely used in the cementing projects to serve as the structural retainer for the wall of oil and gas wells or wellbore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and allow drilling fluid to circulate and extraction to take place. Contact UsMore Information

• SizeStandard

Bow Spring Centralizers Bow spring centralizers have slightly larger diameter than the wellbore, which is effective in vertical and slightly deviated wellbores to centralize the casing in borehole so as to improve the cementing efficiency. Bow spring centralizers are available in single piece, hinged and slip-on types with or without welding process. Adjustable bow heights and full ranges of sizes ranging from 4-1/2" to 20" can satisfy almost all cementing projects in oil and gas cementing constructions.

DPS-01-PR Perforated Type Drilling Pipe Screen DPS-01-PR Material: stainless steel 304 or 316. Length: 12", 18", 24", 36". Thickness: 7 gauge Hole diameter: 5/16", 1/4", 3/16" Sizes: 3-1/2", 4", 4-1/2", 5" and 5-1/2".

ESP cable protector , also called control line protector, are used to protect any configuration of ESP cables, control lines, encapsulated bundles in the wellbore. There are channels to shield cables or lines when they transit across the tubing coupling to prevent from damage during installation or retrieval of completions. The ESP cable protector is made of carbon steel or stainless steel and is suitable for 2-7/8" to 7" O.D. tubing sizes. The control line protector is appropriated for flat, square and round cables and lines.