What is claimed is:
1. A method for manufacturing a fiber composite structural component having a given contour by using fiber composite construction features, said method comprising the following steps:
a) using a mold core (1) having at least two separable core sections (2, 3) which together have a mold core contour closely resembling said given contour of said fiber composite structural component,
b) performing an automatic circular weaving operation, thereby applying a fiber material (5) around said mold core (1) to form a fiber material body (6),
c) removing one of said separable core sections (3) out of said fiber material body (6) to provide an empty portion of said fiber material body,
d) shaping said fiber material body (6) with the other separable core section (2) still in said fiber material body (6), into said given contour to form a semi-finished product (7),
e) impregnating said semi-finished product with a resin matrix material and curing said impregnated semi-finished product to produce said fiber composite structural component, and
f) removing the other core section (2) from said structural component.
2. The method of claim 1, wherein said impregnating and curing is performed in an RTM device.
3. The method of claim 1, further comprising performing said shaping step (d) so that said empty portion is shaped into mounting flanges (8).
4. The method of claim 1, further comprising the following steps:
a) stopping said automatic circular weaving operation when a predetermined number of plies has been applied to said mold core (1), and
b) securing at least one separately produced reinforcing member to said fiber material body (6) prior to said impregnating and curing step.
5. The method of claim 4, further comprising using as said at least one reinforcing member a prefabricated fiber material layer or fiber material fabric.
6. The method of claim 3, further comprising performing said shaping step (d) prior to said impregnating and curing step, by folding and pressing said empty portion of said fiber material body (6) against fixed surfaces of a jig or mold (17) to form said mounting flanges (8) on said fiber material body (6).
7. The method of claim 5, further comprising dimensioning said fiber material layer or fiber material fabric to protrude partially from said fiber material body (6) and, prior to said impregnating and curing step, folding a partially protruding portion (15, 15A) of said fiber material layer or fiber material fabric against said fiber material body (6) to provide at least one reinforced connector surface area.
8. The method of claim 5, comprising folding said partially protruding portion (15, 15A) against at least one end face of said fiber material body (6).
9. The method of claim 5, comprising folding said partially protruding portion against at least one side wall of said fiber material body (6).
10. The method of claim 1, further comprising performing, following said curing, an after treatment.
11. The method of claim 1, further comprising the following steps:
a) temporarily stopping said automatic circular weaving operation when a given number of plies has been applied to said mold core,
b) attaching or placing at least one separately produced reinforcing member to said fiber material body (6), and
c) continuing said automatic circular weaving operation for securing said at least one reinforcing member in said fiber material body (6).
12. The method of claim 11, further comprising using as said reinforcing member separately woven fiber fabric.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A selectively openable inflow control sub comprising:
a tubular body including a wall defining an outer surface and an inner bore, an inflow port through the wall of the tubular body, an inflow controller to control inflow through the inflow port and a sliding sleeve valve slidable within the inner bore between a closed-port position, closing the inflow port, and an open-port position, opening the inflow port to fluid flow therethrough, the sliding sleeve valve being axially moveable from the closed-port position and the open-port position by pushing the sleeve with a mill string.
2. The selectively openable inflow control sub of claim 1 wherein the sliding sleeve valve includes a mill protrusion that defines a diameter less than an outer diameter of the mill string.
3. The selectively openable inflow control sub of claim 2 wherein the diameter at the mill protrusion is less than a drift diameter.
4. The selectively openable inflow control sub of claim 2 wherein the mill protrusion is an annular protrusion.
5. The selectively openable inflow control sub of claim 2 wherein the mill protrusion has a frustoconical upper surface.
6. The selectively openable inflow control sub of claim 1 wherein the sliding sleeve valve is held in the closed-port position by a releasable lock selected to be overcome by the force applied by a mill string.
7. The selectively openable inflow control sub of claim 1 further comprising a stop wall in the inner bore and positioned downhole of the sliding sleeve valve, the stop wall positioned to stop axial movement of the sliding sleeve valve when it reaches the open-port position.
8. The selectively openable inflow control sub of claim 7 wherein the stop wall is a portion of the wall.
9. The selectively openable inflow control sub of claim 7 wherein the stop wall is an end of a sleeve valve positioned downhole of the sliding sleeve valve.
10. The selectively openable inflow control sub of claim 7 wherein the inner bore is free of obstructions to the axial sliding movement of the sleeve between the closed-port position and the stop wall.
11. The selectively openable inflow control sub of claim 1 further comprising a shifting profile on the sliding sleeve valve.
12. The selectively openable inflow control sub of claim 1 further comprising a frac port through the wall, the frac port axially spaced from the inflow port.
13. The selectively openable inflow control sub of claim 12 further comprising a sleeve valve in the inner bore and being moveable from a closed position overlying the frac port to an open position, retracted at least in part from the frac port.
14. The selectively openable inflow control sub of claim 13 further comprising a ball seat on the sleeve valve for catching a ball launched to move the sleeve valve hydraulically.
15. The selectively openable inflow control sub of claim 12 wherein the sliding sleeve valve overlies the frac port in the open-port position.
16. The selectively openable inflow control sub of claim 12 further comprising a closing sleeve moveable to overlie the frac port, when the sleeve valve is in the open position.
17. The selectively openable inflow control sub of claim 16 further comprising a first shifting profile on the sliding sleeve valve and a second shifting profile on the closing sleeve, and the first shifting profile has a form different from the second shifting profile such that a tool that engages the first shifting profile cannot engage the second shifting profile.
18. A method for a wellbore operation, the method comprising:
running a tubing string into a wellbore to a desired position for treating the wellbore;
running a mill through the tubing string to apply an axially directed force to a sliding sleeve valve to move the sliding sleeve valve axially through the tubing string from one position to another position; and removing the mill from the tubing string.
19. The method of claim 18 wherein the axially directed force is applied as the mill is run down into the tubing string.
20. The method of claim 18 wherein the sliding sleeve valve controls the open and closed condition of a fluid port and the force moves the sleeve to open or close the fluid port.
21. The method of claim 18 wherein the axially directed force moves the sliding sleeve valve to open a port controlled by the sliding sleeve valve and permitting fluid to pass from the wellbore into the tubing string through the port.
22. The method of claim 21 further comprising controlling inflow through the port.
23. The method of claim 18 wherein the axially directed force is applied to a protrusion on the sliding sleeve valve that protrudes into the path of the mill.
24. The method of claim 23 further comprising milling through the protrusion.
25. The method of claim 23 further comprising pushing the sliding sleeve valve against a stop and milling through the protrusion.
26. The method of claim 18 further comprising opening a frac port in the tubing string by applying a force to a first sliding sleeve valve for the frac port; and injecting stimulating fluids through the frac port.