Patent ID: 8443898
Filing Date: 2013-05-21
Classification: E21B

Abstract:
1. A wellhead safety device for simultaneously fitting within a lower portion of a tubing head, wherein the tubing head has locking pins, and wherein the wellhead safety device extends into a gate valve, providing redundant individual pressurized wellhead protection from particulates, wherein the wellhead safety device comprises: a. a one-piece, constant inner diameter bore tubular having a constant diameter central bore, wherein the one-piece constant inner diameter bore tubular comprises a first outer surface portion with a first outer diameter and a second outer surface portion with a second outer diameter, and wherein the first outer diameter is larger than the second outer diameter; b. a first seal groove disposed on the first outer diameter; c. a first seal disposed in the first seal groove for sealing against an inner diameter of the gate valve; d. a locking groove formed in the first outer surface portion, wherein the locking groove comprises a first sloping side and a second sloping side, and wherein the first sloping side and the second sloping side both taper towards a center of the locking groove for receiving the locking pins of the tubing head; e. a sloping guide extending from a first end of the one-piece constant inner diameter bore tubular towards the constant diameter central bore; f. a second seal groove disposed on the second outer surface portion; g. a second seal disposed in the second seal groove for sealing against an inner diameter of the tubing head; h. a guide shoulder formed on a second end of the one-piece constant inner diameter bore tubular, wherein the guide shoulder tapers from the second outer surface portion to the constant diameter central bore, wherein a trash groove is formed on the guide shoulder, and wherein a non-pressurized seal is disposed in the trash groove; i. a J-latch formed in the first end, wherein the J-latch comprises two cuts and an inner groove for receiving a running tool that connects the one-piece constant inner diameter bore tubular in the tubing head; j. a landing shoulder formed on an outside of the one-piece constant inner diameter bore tubular between the locking groove and the second seal groove for stopping the wellhead safety device from slipping into a wellbore; k. a pressure detector disposed adjacent the first outer diameter and connected to the tubing head for determining a pressure leak between the first seal groove and the second seal groove; and l. a client device disposed remote to and in communication with the pressure detector, wherein the client device comprises a client device processor, a client device data storage, and computer instructions in the client device data storage for providing an executive dashboard on a status of pressures in the constant diameter central bore.