Straddle packer with fluid pressure packer set and velocity bypass for proppant-laden fracturing fluids

1. A straddle packer with fluid pressure packer set for proppant-laden fracturing fluids, comprising a metal proppant filtration plug body with a sintered metal core that occludes a central passage of the straddle packer downhole of radial fluid paths through a frac sub of the straddle packer and uphole of fluid ports of a compression cylinder of the straddle packer, the proppant filtration plug body being adapted to exclude solid components of high-pressure fluid pumped into the central passage while permitting fluid components of the high-pressure fluid to flow therethrough.

2. The straddle packer as claimed in claim 1 wherein the proppant filtration body is supported in a downhole end of the frac sub.

3. The straddle packer as claimed in claim 2 wherein the proppant filtration plug body has a frusta-conical uphole end adapted to divert the solid components of the high-pressure fluid into the radial fluid paths through the frac sub.

4. The straddle packer as claimed in claim 2 wherein the proppant filtration plug body has a circum-inclined flat surface for each of at least one frac hub slot in the frac sub, the circum-inclined flat surface being adapted to divert the solid components of the high-pressure fluid into respective ones of the at least one frac hub slot.

5. The straddle packer as claimed in claim 2 wherein the proppant filtration plug body is retained in the downhole end of the slotted frac hub by a threaded retainer nut.

6. The straddle packer as claimed in claim 1 wherein the proppant filtration plug body has a 3D-printed sintered metal core.

7. The straddle packer as claimed in claim 1 further comprising a modular pressure cylinder for setting spaced-apart packer elements of the straddle packer, the modular pressure cylinder comprising a plurality of interconnected pressure cylinder modules, each pressure cylinder module comprising a group of pressure cylinder pressure equalization ports and a pressure equalization port sleeve filter adapted to inhibit an ingress of solids from an annulus of a well bore in which the straddle packer is set.

8. The straddle packer as claimed in claim 7 wherein the respective pressure equalization port sleeve filters comprise 3D-printed sintered metal.

9. The straddle packer as claimed in claim 1 wherein the straddle packer comprises a plurality of groups of spaced-apart pressure equalization ports, each group of pressure equalization ports comprising a pressure equalization sleeve filter adapted to inhibit an ingress of solids from a well bore through respective ones of the pressure equalization ports in each group of pressure equalization ports.

10. A straddle packer with fluid pressure packer set for proppant-laden fracturing fluids, comprising a slotted frac hub having a central passage and at least one frac hub slot in fluid communication with the central passage, the slotted frac hub supporting a metal proppant filtration plug body with a sintered metal core that occludes the central passage downhole of the at least one frac hub slot, the proppant filtration plug body being adapted to exclude solid components of high-pressure fluid pumped into the straddle packer from a central passage of the straddle packer downhole of the slotted frac hub, while permitting fluid components of the high-pressure fluid to flow therethrough.

11. The straddle packer as claimed in claim 10 wherein the proppant filtration plug body has a frusta-conical uphole end that is adapted to divert the solid components of the high-pressure fluid into the at least one frac hub slot.

12. The straddle packer as claimed in claim 10 wherein the proppant filtration plug, body has a circum-inclined flat surface for each of the at least one frac hub slots, the circum-inclined flat surface being adapted to divert the solid components of the high-pressure into respective ones of the at least one frac hub slot.

13. The straddle packer as claimed in claim 10 wherein the proppant filtration plug body has a 3D-printed sintered metal core.

14. The straddle packer as claimed in claim 10 wherein the proppant filtration plug body is retained in a downhole end of the slotted frac hub by a threaded retainer nut.

15. The straddle packer as claimed in claim 10 further comprising a modular pressure cylinder for setting spaced-apart packer elements of the straddle packer, the modular pressure cylinder comprising a plurality of interconnected pressure cylinder modules, each pressure cylinder module comprising a group of pressure cylinder pressure equalization ports and a pressure equalization port sleeve filter that is adapted to inhibit an ingress of solids from an annulus of a well bore in which the straddle packer is set.

16. The straddle packer as claimed in claim 10 wherein the straddle packer comprises a plurality of groups of spaced-apart pressure equalization ports, each group of pressure equalization ports comprising a pressure equalization sleeve filter adapted to inhibit an ingress of solids from a well bore through respective ones of the pressure equalization ports in each group of pressure equalization ports.

17. The straddle packer as claimed in claim 16 wherein the respective pressure equalization port sleeve filters comprise 3D-printed sintered metal bodies.

18. The straddle packer as claimed in claim 17 wherein at least one of the respective pressure equalization port sleeve filters is axially bifurcated.