A frac plug apparatus has a plug body that comprises a central bore and separable elements. The central bore extends axially through the plug body. The separable elements are joined by relatively weak bridging portions adapted to break in a controlled manner, the separable elements thereby forming an integral component comprised of the separable elements. The separable elements comprise a wedge element and an array of slip elements. The slip elements are joined to the wedge element by first bridging portions.

Systems of the present disclosure relate to metal-to-metal seals for oilfield tubulars. A pin for a metal-to-metal seal, comprises a pin nose and a support structure. A gap extends between the pin nose and the support structure.

A well tool device for transporting a heat generating mixture into a well pipe includes an upper connection section, a main housing section, and a sealing device. The main housing section includes a compartment for the heat generating mixture. The sealing device is provided below the main housing section. The sealing device includes a lower supporting element including a lower wedging surface; an upper wedging surface faced towards the lower wedging surface; and a sealing ring provided between the lower wedging surface and the upper wedging surface. The sealing element includes a plurality of thimble-shaped elements inserted into each other to form a torus. Relative axial movement between the lower wedging surface and the upper wedging surface in a direction towards each other provides radial expansion of the sealing element.

An isolation device can include a packer element that is actuated via a slip system to engage with an inner diameter of a tubing string to set the plug. The isolation device can be a frac plug. Top and bottom slip props of the slip system can be shaped such that the packer element is inhibited or prevented from engaging with an inner mandrel after the plug has been set within a wellbore. The slip props can be self-supporting; thus, the inner mandrel can be removed from the isolation device after setting and can be reused in other downhole tools. The isolation device can be used for zonal isolation to treat a zone of interest within a subterranean formation. The treatment can be a fracturing operation.

A frac plug apparatus has a plug body that comprises a central bore and separable elements. The central bore extends axially through the plug body. The separable elements are joined by relatively weak bridging portions adapted to break in a controlled manner, the separable elements thereby forming an integral component comprised of the separable elements. The separable elements comprise a wedge element and an array of slip elements. The slip elements are joined to the wedge element by first bridging portions.

An isolation device can include a packer element that is actuated via a slip system to engage with an inner diameter of a tubing string to set the plug. The isolation device can be a frac plug. Top and bottom slip props of the slip system can be shaped such that the packer element is inhibited or prevented from engaging with an inner mandrel after the plug has been set within a wellbore. The slip props can be self-supporting; thus, the inner mandrel can be removed from the isolation device after setting and can be reused in other downhole tools. The isolation device can be used for zonal isolation to treat a zone of interest within a subterranean formation. The treatment can be a fracturing operation.

Systems of the present disclosure relate to metal-to-metal seals for oilfield tubulars. A pin for a metal-to-metal seal, comprises a pin nose and a support structure. A gap extends between the pin nose and the support structure.

A dissolvable composite slip can include at least in part a dissolvable material. A dissolvable composite slip can include at least in part a non-dissolvable metallic material. The dissolvable material should be strong enough to support the non-dissolvable metallic material which serves as teeth to set into the casing during the function of the downhole tool. The dissolvable material can include but is not limited to a polymeric material or a metallic material. At least a part of the slip is able to be set as well as be dissolved.

The invention consists a packer system for use in well. In particular, the invention deals with a packer itself, a settling device, to settle said packer, and a retriever device, to recover said packer, it also comprises the process of operation corresponding to said system. Also comprises a process to settle with a settle device and a process to retrieve, with a retriever device, that can be used in settle and recovery processes, for delayed production of wells and the reduction of costs associated with the replacement of progressive cavity pumps (PCP).

A method of manufacturing a gripping element can include depositing a gripping element material, and thereby gradually building up the gripping element and forming a gripping surface thereon, the gripping surface being configured to grippingly engage a well surface. A gripping system can include at least one extendable gripping element configured to grip a well surface, and the gripping element including a gripping element material enclosing one or more voids in the gripping element. Another gripping system can include at least one extendable gripping element having a gripping surface configured to grip a well surface, and the gripping element including at least two gripping element materials deposited to form the gripping element. Properties or characteristics may gradually change or vary from one gripping element material to another gripping element material in the gripping element. The gripping element materials may each include the same basic matrix material.