Abstract: A coiled tubing guide-in device is applied to oil field coiled tubing operation and used for guiding a coiled tubing into injector head gripper blocks. The coiled tubing guide-in device mainly consists of a slip connecting head, a locking sleeve, a floating sleeve, a guide head, and a traction steel rope. In the structure of the slip connecting head, a cone of an expansion plug is arranged in a slip sleeve. A lower end of a tightening nut is a convex spherical body. At a lower end of the tightening nut, an end of a traction steel rope is fixed in a rectangular groove at the lower end of the tightening nut through a threaded pin. In the structure of the locking sleeve, an upper end surface of a spherical support body is a concave spherical surface. An inner conical sleeve and an outer conical clamping sleeve are arranged in a cylindrical space. A spherical head is fixed on inner screw threads of the spherical support body. The number of combined locking bodies ranges from 4 to 15.

Abstract: A coiled tubing guide-in device is applied to oil field coiled tubing operation and used for guiding a coiled tubing into injector head gripper blocks. The coiled tubing guide-in device mainly consists of a slip connecting head, a locking sleeve, a floating sleeve, a guide head, and a traction steel rope. In the structure of the slip connecting head, a cone of an expansion plug is arranged in a slip sleeve. A lower end of a tightening nut is a convex spherical body. At a lower end of the tightening nut, an end of a traction steel rope is fixed in a rectangular groove at the lower end of the tightening nut through a threaded pin. In the structure of the locking sleeve, an upper end surface of a spherical support body is a concave spherical surface. An inner conical sleeve and an outer conical clamping sleeve are arranged in a cylindrical space. A spherical head is fixed on inner screw threads of the spherical support body. The number of combined locking bodies ranges from 4 to 15.