# US 2019/0377992 A1 · Straddle packer with fluid pressure packer set and velocity bypass for proppant-laden fracturing fluids > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0377992 A1 - Document ID: US20190377992A1 - Status: Published application - Kind: A1 - Application number: 16/456,021 - Filed: 2019-06-28 - Published: 2019-12-12 - Earliest claimed: 2017-12-21 - Assignees: Exacta-Frac Energy Services, Inc. - Applicants: Exacta-Frac Energy Services, Inc. - Inventors: Joze John Hrupp; Ahmed Mohamed Saeed - Web page: https://patentgrep.com/patent/US20190377992A1 ## CPC - E21B 21/002: {Down-hole drilling fluid separation systems (containers comprising collecting means with a strainer E21B27/005; subsoil filtering E21B43/02; down-hole production separators E21B43/38)} - G06K 19/0723: {the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs} - E21B 33/124: Units with longitudinally-spaced plugs for isolating the intermediate space - E21B 43/267: reinforcing fractures by propping - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract A straddle packer for proppant-laden fracturing fluids has a slotted frac sub with a proppant filtration plug body that excludes proppant in the fracturing fluid from a central passage of the straddle packer downhole from the slotted frac hub. Pressure equalization sleeve filters exclude an entry of debris in a well bore through pressure equalization ports of the straddle packer. ## Claims ### Claim 1 A straddle packer with fluid pressure packer set for proppant-laden fracturing fluids, comprising a proppant filtration plug body 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 excluding solid components of high-pressure fluid pumped into the central passage while permitting fluid components of the high-pressure fluid to flow therethrough. ### Claim 2 (depends on 1) The straddle packer as claimed in claim 1 wherein the proppant filtration body is supported in a downhole end of the frac sub. ### Claim 3 (depends on 2) The straddle packer as claimed in claim 2 wherein the proppant filtration plug body has a frusta-conical uphole end that diverts the solid components of the high-pressure fluid into the at least one frac hub slot of the frac sub. ### Claim 4 (depends on 2) 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 diverting the solid components of the high-pressure fluid into respective ones of the at least one frac hub slot. ### Claim 5 (depends on 1) The straddle packer as claimed in claim 1 wherein the proppant filtration plug body comprises a metal body with a sintered metal core. ### Claim 6 (depends on 5) The straddle packer as claimed in claim 5 wherein the proppant filtration plug body has a 3D-printed sintered metal core. ### Claim 7 (depends on 2) The straddle packer as claimed in claim 2 wherein the proppant filtration plug body is retained in a downhole end of the slotted frac hub by a threaded retainer nut. ### Claim 8 (depends on 1) 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 that inhibits an ingress of solids from an annulus of a well bore in which the straddle packer is set. ### Claim 9 (depends on 1) The straddle packer as claimed in claim 1 wherein the straddle packer comprises a plurality of groups of spaced-apart pressure equalization ports, the respective groups of pressure equalization ports respectively comprising a pressure equalization sleeve filter 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. ### Claim 10 (depends on 8) The straddle packer as claimed in claim 8 wherein the respective pressure equalization port sleeve filters comprise 3D-printed sintered metal. ### Claim 11 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 proppant, filtration plug body that occludes the central passage downhole of the at least one frac hub slot, the proppant filtration plug body excluding 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. ### Claim 12 (depends on 11) The straddle packer as claimed in claim 11 wherein the proppant filtration plug, body has a frusta-conical uphole end that diverts the solid components of the high-pressure fluid into the at least one frac hub slot. ### Claim 13 (depends on 11) The straddle packer as claimed in claim 11 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 diverting the solid components of the high-pressure into respective ones of the at least one frac hub slot. ### Claim 14 (depends on 11) The straddle packer as claimed in claim 11 wherein the proppant filtration plug body comprises a metal body with a sintered metal core. ### Claim 15 (depends on 14) The straddle packer as claimed in claim 14 wherein the proppant filtration plug body has a 3D-printed sintered metal core. ### Claim 16 (depends on 11) The straddle packer as claimed in claim 11 wherein the proppant filtration plug body is retained in a downhole end of the slotted frac hub by a threaded retainer nut. ### Claim 17 (depends on 11) The straddle packer as claimed in claim 11 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 inhibits an ingress of solids from an annulus of a well bore in which the straddle packer is set. ### Claim 18 (depends on 11) The straddle packer as claimed in claim 11 wherein the straddle packer comprises a plurality of groups of spaced-apart pressure equalization ports, the respective groups of pressure equalization ports respectively comprising a pressure equalization sleeve filter 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. ### Claim 19 (depends on 18) The straddle packer as claimed in claim 18 wherein the respective pressure equalization port sleeve filters comprise 3D-printed sintered metal bodies. ### Claim 20 (depends on 19) The straddle packer as claimed in claim 19 wherein at least one of the respective pressure equalization port sleeve filters is axially bifurcated.