IMPROVED SEAL FOR A WELL

A pressure energised seal for a wellhead, in particular, provides a seal of an annulus between an inner wellhead casing member and an outer wellhead casing member. The wellhead incorporates a clamping arrangement whereby the outer member is arranged to be deflected radially inwardly in order to grip and secure the inner member within the bore of the outer member. Also, a seal for use in such a clamping arrangement. In particular, the seal includes a sealing lip which locates within a groove provided in the outer clamping surface of the inner member. A seal is activated and created as the outer member is clamped inwardly since this causes the outer member to compress the inner member and to reduce the diameter of the inner member. Also, a well and a method of sealing an annulus in a well. 1. A sealing arrangement comprising an inner well casing and a seal for sealing an annulus in a well , the annulus being formed between an outer surface of the inner well casing and an outer well casing of the well wherein the inner well casing comprises:a central longitudinal axis which extends along a longitudinal axis of the inner well casing; andan outer clamping surface which is arranged to be secured and clamped by the outer well casing, the outer clamping surface being located at an initial radial distance from the central longitudinal axis of the inner well casing;the seal comprising:a flexible metal sealing lip which projects radially outwardly and away from the central longitudinal axis of the inner well casing, the metal sealing lip having a distal sealing surface for sealing against an inner surface of the outer well casing; andwherein, in use, pressure within the annulus is arranged to urge the sealing surface towards the inner surface of the outer well casing.2. A sealing arrangement according to claim 1 , wherein claim 1 , prior to use claim 1 , the sealing surface locates at an initial radial distance relative to the central longitudinal axis which is less than or ...

Improved Seal for a Well

As shown in Figure 1, the present invention provides a pressure energised seal (10) for a wellhead (11) and, in particular, provides a seal (10) of an annulus between an inner wellhead casing member (14) and an outer wellhead casing member (16). The wellhead (11) incorporates a clamping arrangement (22) whereby the outer member (6) is arranged to be deflected radially inwardly in order to grip and secure the inner member (14) within the bore of the outer member (16). The present invention provides an improved seal for use in such a clamping arrangement (22). In particular, the seal (10) includes a sealing lip (12) which locates within a groove provided in the outer clamping surface (15) of the inner member (14). A seal is activated and created as the outer member (16) is clamped inwardly since this causes the outer member (16) to compress the inner member (14) and to reduce the diameter of the inner member (14). This squeezing of the inner member (14) causes the sealing lip (12) to come into contact with the outer member (16) and to be pressed against the outer member (16). This thereby automatically creates a seal as the inner member (14) is clamped by the outer member (16). The normal inherent sealing strength is increased due to the sealing lip (12) being urged to flare (20) outwardly as a result of the pressure within the annulus to be sealed.

Improved seal for a well

As shown in Figure 1, the present invention provides a pressure energised seal (10) for a wellhead (11) and, in particular, provides a seal (10) of an annulus between an inner wellhead casing member (14) and an outer wellhead casing member (16). The wellhead (11) incorporates a clamping arrangement (22) whereby the outer member (6) is arranged to be deflected radially inwardly in order to grip and secure the inner member (14) within the bore of the outer member (16). The present invention provides an improved seal for use in such a clamping arrangement (22). In particular, the seal (10) includes a sealing lip (12) which locates within a groove provided in the outer clamping surface (15) of the inner member (14). A seal is activated and created as the outer member (16) is clamped inwardly since this causes the outer member (16) to compress the inner member (14) and to reduce the diameter of the inner member (14). This squeezing of the inner member (14) causes the sealing lip (12) to come into contact with the outer member (16) and to be pressed against the outer member (16). This thereby automatically creates a seal as the inner member (14) is clamped by the outer member (16). The normal inherent sealing strength is increased due to the sealing lip (12) being urged to flare (20) outwardly as a result of the pressure within the annulus to be sealed.

Improved seal for a well.

Como se muestra en la Figura 1, la presente invención proporciona un sello cargado de energía a presión 10 para una boca del pozo 11 y, en particular proporciona 1n1 obturador 10 de [ni anillo entre un miembro de tubería de revestimiento interior de la boca del pozo 14 y un miembro de tubería de revestimiento exterior de la boca del pozo 16. La boca del pozo 11 incorpora una disposición de sujeción 22 mediante la cual el miembro exterior 16 está dispuesto para ser desviado radialmente hacia el interior a fin de agarrar y asegurar el miembro interior 14 dentro del pozo del miembro exterior 16. La presente invención proporciona un obturador mejorado para su uso en dicha disposición de sujeción 22. En particular, el obturador 10 incluye un borde obturador 12 que se ubica dentro de una acana1adura provista en la superficie de sujeción exterior 15 del miembro interior 14. Un obturador se activa y se crea cuando el miembro exterior 16 se sujeta hacia el interior, ya que hace que el miembro exterior 16 comprima el miembro interior 14 y que reduzca el diámetro del miembro interior 14. Apretar el número interior 14 hace que el borde obturador 12 entre en contacto con el miembro exterior 16 que se prense contra el miembro exterior 16. Esto de este modo crea automáticamente un obturador cuando el miembro interior 14 se sujeta por el miembro exterior 16. La resistencia de obturación implícita normal aumenta debido a que se empuja al borde obturador a ensancharse hacia el exterior como resultado de la presión dentro del anillo que se debe obturar.

Sistema de fijacion de tapon de corona.

La presente invención se relaciona con un tapón de corona 10 para un árbol de un pozo o boca de pozo de petróleo o gas o asociado con él y una disposición de fijación 50 para fijar el tapón de corona 10 dentro del árbol. El cuerpo principal 12 del tapón de corona 10 comprende un cuerpo macizo para crear la barrera dentro del pozo de producción. El cuerpo macizo de ese modo crea una barrera robusta, resistente y confiable. El tapón de corona 10 queda retenido dentro del miembro exterior 30 a través de la distorsión del miembro exterior 30 hacia el interior que agarra y fija el tapón de corona 10 dentro del pozo. La disposición de fijación comprende una disposición de fijación 50 mediante la cual se genera una fuerza radial hacia el interior para distorsionar (desviar o comprimir) un miembro exterior 30 hacia el interior a fin de agarrar un componente ubicado dentro del miembro exterior 30. El miembro exterior 30 se deforma de manera elástica de manera tal que el miembro exterior 30 regrese a una posición liberada una vez que se libere o se retire la fuerza de fijación. En la realización preferida, se disponen dos superficies concéntricas cónicas dispuestas opuestas para moverse axialmente una sobre otra para crear la fuerza dirigida hacia el interior. La combinación de la fuerza de fijación (compresión) junto cxn1 el cuerpo macizó provee una disposición de tapón de corona mejorada que también es fácil y confiable de operar.

Crown plug securement system

Improved seal for a well

Sello mejorado para un pozo

Como se muestra en la Figura 1, la presente invención proporciona un sello activado por presión (10) para una cabeza de pozo (11) y, en particular, proporciona un sello (10) de un espacio anular entre un miembro de carcasa de cabeza de pozo interior (14) y una cabeza de pozo exterior. miembro de carcasa (16). La cabeza del pozo (11) incorpora una disposición de sujeción (22) mediante la cual el miembro exterior (6) está dispuesto para desviarse radialmente hacia dentro con el fin de sujetar y asegurar el miembro interior (14) dentro del orificio del miembro exterior (16). La presente invención proporciona un sello mejorado para usar en dicha disposición de sujeción (22). En particular, el sello (10) incluye un labio de sellado (12) que se ubica dentro de una ranura proporcionada en la superficie de sujeción exterior (15) del miembro interior (14). Se activa y crea un sello cuando el miembro exterior (16) se sujeta hacia dentro, ya que esto hace que el miembro exterior (16) comprima el miembro interior (14) y reduzca el diámetro del miembro interior (14). Este apretón del miembro interior (14) hace que el labio de sellado (12) entre en contacto con el miembro exterior (16) y se presione contra el miembro exterior (16). De este modo, esto crea automáticamente un sello a medida que el miembro exterior (16) sujeta el miembro interior (14). La resistencia de sellado inherente normal aumenta debido a que el labio de sellado (12) es obligado a ensancharse (20) hacia afuera como resultado de la presión dentro del anillo a sellar. (Traducción automática con Google Translate, sin valor legal)

Seal for a well

A pressure energised seal for a wellhead, in particular, provides a seal of an annulus between an inner wellhead casing member and an outer wellhead casing member. The wellhead incorporates a clamping arrangement whereby the outer member is arranged to be deflected radially inwardly in order to grip and secure the inner member within the bore of the outer member. Also, a seal for use in such a clamping arrangement. In particular, the seal includes a sealing lip which locates within a groove provided in the outer clamping surface of the inner member. A seal is activated and created as the outer member is clamped inwardly since this causes the outer member to compress the inner member and to reduce the diameter of the inner member. Also, a well and a method of sealing an annulus in a well.

Crown plug securement system

Crown plug securement system

Crown plug securement system

The present invention relates to a crown plug (10) for a tree of/associated with an oil/gas well/wellhead and a securement arrangement (50) for securing the crown plug (10) within the tree. The main body (12) of the crown plug (10) comprises a solid body to create the barrier within the production bore. The solid body thereby creates a robust, strong and reliable barrier. The crown plug (10) is retained within the outer member (30) through the distortion of the outer member (30) inwardly which thereby grips and clamps the crown plug (10) within the bore. The securement arrangement comprises a clamping arrangement (50) by which an inward radial force is generated in order to distort (deflect/compress) an outer member (30) inwardly in order to grip a component located within the outer member (30). The outer member (30) is elastically deformed such that the outer member (30) will return to a released position once the clamping force is released/removed. In the preferred embodiment, two concentric oppositely arranged tapered surfaces are arranged to move axially over each other to create the inwardly directed force. The combination of the clamping (squeeze) securing force together with the solid body provides an improved crown plug arrangement which is also easy and reliable to operate.

Crown plug securement system

The present invention relates to a crown plug (10) for a tree of/associated with an oil/gas well/wellhead and a securement arrangement (50) for securing the crown plug (10) within the tree. The main body (12) of the crown plug (10) comprises a solid body to create the barrier within the production bore. The solid body thereby creates a robust, strong and reliable barrier. The crown plug (10) is retained within the outer member (30) through the distortion of the outer member (30) inwardly which thereby grips and clamps the crown plug (10) within the bore. The securement arrangement comprises a clamping arrangement (50) by which an inward radial force is generated in order to distort (deflect/compress) an outer member (30) inwardly in order to grip a component located within the outer member (30). The outer member (30) is elastically deformed such that the outer member (30) will return to a released position once the clamping force is released/removed. In the preferred embodiment, two concentric oppositely arranged tapered surfaces are arranged to move axially over each other to create the inwardly directed force. The combination of the clamping (squeeze) securing force together with the solid body provides an improved crown plug arrangement which is also easy and reliable to operate.

Sistema de fixação de plugue da coroa

SISTEMA DE FIXAÇÃO DE PLUGUE DA COROA. A presente invenção se refere a um plugue da coroa (10) para uma árvore de/associada a um poço/cabeça de poço de petróleo/gás e um arranjo de fixação (50) para fixar o plugue da coroa (10) dentro da árvore. O corpo principal (12) do plugue da coroa (10) compreende um corpo sólido para criar a barreira dentro dos orifícios de produção. O corpo sólido cria assim uma barreira robusta, forte e confiável. O plugue da coroa (10) é retido dentro do membro externo (30) através da distorção do membro externo (30) para dentro que, desse modo, prende e agarra o plugue da coroa (10) dentro dos orifícios. A disposição de fixação compreende uma disposição de aperto (50) pela qual uma força radial para dentro é gerada a fim de distorcer (desviar/comprimir) um membro externo (30) para dentro a fim de agarrar um componente localizado dentro do membro externo (30). O membro externo (30) é elasticamente deformado de tal forma que o membro externo (30) retornará à posição de liberação assim que a força de fixação for liberada/removida. Na modalidade preferencial, duas superfícies afuniladas concêntricas opostas estão dispostas para se moverem axialmente uma sobre a outra para criar a força dirigida para dentro. A combinação da força de fixação de aperto (compressão) juntamente com o corpo sólido proporciona uma disposição melhorada do plugue da coroa que também é fácil e confiável de operar.

Selo aprimorado de poço

Selo aprimorado de poço. Como mostrado na Figura 1, a presente invenção fornece selo energizado por pressão 10 à cabeça de poço 11 e, em particular, fornece o selo 10 anular entre o elemento de revestimento interno da cabeça de poço 14 e o elemento de revestimento externo da cabeça de poço 16. A cabeça de poço 11 incorpora o arranjo de fixação 22 por meio do qual o elemento externo 16 é disposto para ser desviado radialmente para dentro de modo a agarrar e prender o elemento interno 14 dentro do orifício do elemento externo 16. A presente invenção fornece selo aprimorado para uso no arranjo de fixação 22. Em particular, o selo 10 inclui o lábio de vedação 12 que se localiza dentro da ranhura fornecida na superfície de fixação externa 15 do elemento interno 14. A vedação é ativada e criada à medida que o elemento externo 16 é forçado para dentro pois isso faz com que o elemento externo 16 comprima o elemento interno 14 e reduza o diâmetro do elemento interno 14. Este aperto do elemento interno 14 faz com que o lábio de vedação 12 entre em contato com o elemento externo 16 e seja pressionado contra o elemento externo 16. Isso cria automaticamente o selo pois o elemento interno 14 é preso pelo elemento externo 16. A força normal (...).

Improved seal for a well

Crown plug securement system

A crown plug for a tree of an oil/gas well/wellhead has a securement arrangement for securing the crown plug within the tree. The main body of the crown plug comprises a solid body creating the barrier within the production bore. The solid body creates a robust, strong and reliable barrier. The crown plug is retained within the outer member through inward distortion which secures the crown plug. The securement arrangement arises from an inward radial force that distorts the outer member inwardly to grip a component located within the outer member. The outer member elastically deforms and the outer member returns to a released position once the clamping force is released. Two concentric oppositely arranged tapered surfaces move axially to create the inwardly directed force. The clamping force and the solid body together provide an improved crown plug which is easy and reliable to operate.