美国JOY制造公司推销一种称为Larkin—strip—Eze油管井口的新产品。这是一种用螺纹联接的整体式油管井口,壳体为整体锻造。可承受850001b(38555kg)的油管载荷。这种产品的特点是,不用卸掉防喷器便可取出和更换橡胶心子,在保持压力控制的情况下,可通过71％16″防喷器更换。由于橡胶心子不带套筒,可省去○型密封圈和一组联接螺纹。 JOY Manufacturing Inc. of the United States promotes a new product called the Larkin-strip-Eze tubing wellhead. This is a monolithic tubing head that is threaded and the housing is monolithically forged. Can withstand 850001b (38555kg) of the tubing load. The feature of this product is that it can be removed and replaced without removing the blowout preventer and can be replaced with a 71% 16 "blowout preventer while maintaining pressure control. Since the rubber core does not have a sleeve, Go to o-ring and a set of coupling threads.