Apparatus for measurements related to fluid flow in a borehole
First Claim
1. A logging tool for carrying our measurements in a well related to the fluid therein, comprising:
- a housing, including a measuring pipe provided with measuring means;
a packer means designed to derive the whole fluid flow into said measuring pipe; and
means for increasing, through the fluid flow action, the pressure of the fluid located substantially upstream of the packer means, wherein said packer means comprises funnel means including a wide end and a narrow end, and wherein the means for increasing pressure includes obstacle means disposed in the fluid flow path, at, or downstream of, the narrow end of said packer means.
1 Assignment
0 Petitions
Accused Products
Abstract
A logging tool for measuring the fluid flow rate in a well, comprises a measuring pipe provided with a flowmeter, a packer device designed to derive the whole fluid flow into the measuring pipe, and an obstacle disposed in the fluid flow path, at, or downstream of, the exit of the packer for increasing, through the fluid flow action, the pressure of the fluid located upstream of the packer. The obstacle is e.g. a valve responsive to flowing fluid pressure on one side and to a biasing spring on the other side. The packer includes, in its bottom end designed to seal with the casing wall, an anulus seal defining a tubular chamber able to be inflated under the sole fluid action the annulus seal being made by two circumferential parts, facing one another, and fixed along their upper and lower perimeters. The tubular chamber is in communication with the fluid flow and is adapted to expand radially upon the application of fluid pressure while being substantially longitudinally non-extensible.
-
Citations
13 Claims
-
1. A logging tool for carrying our measurements in a well related to the fluid therein, comprising:
-
a housing, including a measuring pipe provided with measuring means; a packer means designed to derive the whole fluid flow into said measuring pipe; and
means for increasing, through the fluid flow action, the pressure of the fluid located substantially upstream of the packer means, wherein said packer means comprises funnel means including a wide end and a narrow end, and wherein the means for increasing pressure includes obstacle means disposed in the fluid flow path, at, or downstream of, the narrow end of said packer means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
- 8. A logging tool for carrying out measurements in a borehole related to the fluid therein, comprising a measuring pipe provided with measuring means, and packer means designed to derive the whole fluid flow into said measuring pipe, wherein said packer means includes a wide end designed to seal with the borehole wall, and annulus sealing means able to be inflated under the fluid action and being disposed at the wide end.
-
13. A logging tool for carrying out measurements in a well related to the fluid flow therein, comprising a body including a measuring pipe provided with measuring means, a packer means designed to derive the whole fluid flow into said measuring pipe, further comprising means for increasing, through the fluid flow action, the pressure of the fluid located substantially upstream of said packer means, and said packer means further including, in its bottom end designed to seal with the casing wall, an annulus sealing means able to be inflated under the fluid action.
Specification